annotate Discovery/Src/vpm.c @ 69:1eeab3e09f4d

1.3.8 forum release
author heinrichsweikamp
date Thu, 30 Aug 2018 21:48:21 +0200
parents 8f8ea3a32e82
children e1d66bc78f9a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1 ///////////////////////////////////////////////////////////////////////////////
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2 /// -*- coding: UTF-8 -*-
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
3 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
4 /// \file Discovery/Src/vpm.c
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
5 /// \brief critical_volume comment by hw
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
6 /// \author Heinrichs Weikamp, Erik C. Baker
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
7 /// \date 19-April-2014
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
8 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
9 /// \details
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
10 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
11 /// $Id$
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
12 ///////////////////////////////////////////////////////////////////////////////
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
13 /// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
14 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
15 /// This program is free software: you can redistribute it and/or modify
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
16 /// it under the terms of the GNU General Public License as published by
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
17 /// the Free Software Foundation, either version 3 of the License, or
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
18 /// (at your option) any later version.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
19 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
20 /// This program is distributed in the hope that it will be useful,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
21 /// but WITHOUT ANY WARRANTY; without even the implied warranty of
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
22 /// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
23 /// GNU General Public License for more details.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
24 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
25 /// You should have received a copy of the GNU General Public License
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
26 /// along with this program. If not, see <http://www.gnu.org/licenses/>.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
27 //////////////////////////////////////////////////////////////////////////////
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
28 /// \par Varying Permeability Model (VPM) Decompression Program in c (converted from FORTRAN)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
29 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
30 /// Author: Erik C. Baker
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
31 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
32 /// "DISTRIBUTE FREELY - CREDIT THE AUTHORS"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
33 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
34 /// This program extends the 1986 VPM algorithm (Yount & Hoffman) to include
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
35 /// mixed gas, repetitive, and altitude diving. Developments to the algorithm
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
36 /// were made by David E. Yount, Eric B. Maiken, and Erik C. Baker over a
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
37 /// period from 1999 to 2001. This work is dedicated in remembrance of
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
38 /// Professor David E. Yount who passed away on April 27, 2000.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
39 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
40 /// Notes:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
41 /// 1. This program uses the sixteen (16) half-time compartments of the
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
42 /// Buhlmann ZH-L16 model. The optional Compartment 1b is used here with
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
43 /// half-times of 1.88 minutes for helium and 5.0 minutes for nitrogen.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
44 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
45 /// 2. This program uses various DEC, IBM, and Microsoft extensions which
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
46 /// may not be supported by all FORTRAN compilers. Comments are made with
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
47 /// a capital "C" in the first column or an exclamation point "!" placed
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
48 /// in a line after code. An asterisk "*" in column 6 is a continuation
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
49 /// of the previous line. All code, except for line numbers, starts in
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
50 /// column 7.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
51 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
52 /// 3. Comments and suggestions for improvements are welcome. Please
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
53 /// respond by e-mail to: EBaker@se.aeieng.com
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
54 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
55 /// Acknowledgment: Thanks to Kurt Spaugh for recommendations on how to clean
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
56 /// up the code.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
57 /// ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
58 /// Converted to vpmdeco.c using f2c; R.McGinnis (CABER Swe) 5/01
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
59 /// ===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
60 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
61 /// ************************ Heirichs Weipkamp **************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
62 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
63 /// The original Yount & Baker code has been adjusted for real life calculation.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
64 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
65 /// 1) The original main function has been split in several functions
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
66 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
67 /// 2) When the deco zone is reached (while ascending) the gradient factors are kept fix
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
68 /// and critical volume algorithm is switched of. maxfirststopdepth is kept fix
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
69 /// to make shure Boeyls Law algorithm works correctly
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
70 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
71 /// 4) gas_loadings_ascent_descend heeds all gaschanges and CCR support has been added
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
72 ///
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
73
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
74 #include <stdio.h>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
75 #include <stdlib.h>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
76 #include <string.h>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
77 #include <math.h>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
78 #include <time.h>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
79
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
80 //#include "compiler.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
81 //#include "sdramc.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
82 #include "vpm.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
83 //#include "buehlmann.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
84
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
85 #include "decom.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
86
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
87 //#include "decompression.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
88 //#include "taskmanagement\tissue_calls.h"
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
89 #define true 1
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
90 #define false 0
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
91
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
92 #define GAS_N2 0
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
93 #define GAS_HE 1
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
94 /* temp vars to simplify UNFMTLISTs */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
95 float fO2, fHe, fN2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
96 float dc, rc, ssc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
97 short mc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
98
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
99 const _Bool buehlmannSafety = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
100 /* Common Block Declarations */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
101
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
102 extern const float SURFACE_TENSION_GAMMA; //!Adj. Range: 0.015 to 0.065 N/m
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
103 extern const float SKIN_COMPRESSION_GAMMAC; //!Adj. Range: 0.160 to 0.290 N/m
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
104 extern const float UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
105 extern const float WATER_VAPOR_PRESSURE; // (Schreiner value) based on respiratory quotien
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
106 extern const float CRIT_VOLUME_PARAMETER_LAMBDA; //!Adj. Range: 6500 to 8300 fsw-min
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
107 extern const float GRADIENT_ONSET_OF_IMPERM_ATM; //!Adj. Range: 5.0 to 10.0 atm
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
108 extern const float REGENERATION_TIME_CONSTANT; //!Adj. Range: 10080 to 51840 min
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
109 extern const float PRESSURE_OTHER_GASES_MMHG; //!Constant value for PO2 up to 2 atm
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
110 extern const float CONSTANT_PRESSURE_OTHER_GASES; // PRESSURE_OTHER_GASES_MMHG / 760. * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
111
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
112 extern const float HELIUM_TIME_CONSTANT[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
113 extern const float NITROGEN_TIME_CONSTANT[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
114
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
115 float minimum_deco_stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
116 float run_time, run_time_first_stop;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
117 float segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
118 short mix_number;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
119 float barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
120 _Bool altitude_dive_algorithm_off;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
121 _Bool units_equal_fsw, units_equal_msw;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
122
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
123 /* by hw 11.06.2015 to allow */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
124 float gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
125
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
126 float helium_pressure[16], nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
127 //float helium_pressure_crush[16], nitrogen_pressure_crush[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
128 //float fraction_helium[MAX_GASMIXES + EXTRA_GASMIXES], fraction_nitrogen[MAX_GASMIXES + EXTRA_GASMIXES];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
129 //float initial_critical_radius_he[16], initial_critical_radius_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
130 //float adjusted_critical_radius_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
131 //adjusted_critical_radius_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
132 //float max_crushing_pressure_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
133 //max_crushing_pressure_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
134 float surface_phase_volume_time[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
135 //float max_actual_gradient[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
136 //float amb_pressure_onset_of_imperm[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
137 //gas_tension_onset_of_imperm[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
138 //float initial_helium_pressure_global[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
139 //initial_nitrogen_pressure_global[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
140 float regenerated_radius_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
141 regenerated_radius_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
142 //float adjusted_crushing_pressure_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
143 //adjusted_crushing_pressure_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
144 float allowable_gradient_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
145 allowable_gradient_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
146 //float initial_allowable_gradient_he[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
147 //initial_allowable_gradient_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
148
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
149 //_Bool deco_zone_reached;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
150 _Bool critical_volume_algorithm_off;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
151 float max_first_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
152 float max_deco_ceiling_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
153 long vpm_time_calc_begin = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
154 //Boylslaw compensation
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
155 float deco_gradient_he[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
156 float deco_gradient_n2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
157 int last_nullzeit;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
158 int vpm_calc_what;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
159 int count_critical_volume_iteration;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
160 short number_of_changes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
161 float depth_change[11];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
162 float step_size_change[11];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
163 float rate_change[11];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
164 short mix_change[11];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
165
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
166 const _Bool vpm_b = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
167
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
168 //extern
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
169 /*extern float tissue_N2_saturation[4][16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
170 extern float tissue_He_saturation[4][16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
171 extern long dv_divetime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
172 extern dive_data_t dive_data;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
173 extern int dive_ambient_pressure_mbar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
174 extern long dv_seconds_since_last_dive;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
175 extern int tts[4];*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
176 extern const float float_buehlmann_N2_factor_expositon_20_seconds[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
177 extern const float float_buehlmann_He_factor_expositon_20_seconds[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
178 extern const float float_buehlmann_N2_factor_expositon_one_minute[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
179 extern const float float_buehlmann_He_factor_expositon_one_minute[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
180 extern const float float_buehlmann_N2_factor_expositon_five_minutes[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
181 extern const float float_buehlmann_He_factor_expositon_five_minutes[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
182 extern const float float_buehlmann_N2_factor_expositon_one_hour[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
183 extern const float float_buehlmann_He_factor_expositon_one_hour[];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
184
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
185 //extern buehlmann_configuration_t buehlmann_config;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
186
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
187 extern unsigned char CCR_mode; //0x100 // by tissue_calls.c // uchar
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
188
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
189 //extern gaschange2_t gaschange_CCR_backup[2][BUEHLMANN_STRUCT_MAX_GASES];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
190
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
191
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
192 float starting_ambient_pressure_global;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
193 float ending_ambient_pressure_global;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
194 float depth_start_of_deco_calc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
195 float depth_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
196 float first_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
197 float run_time_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
198
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
199 float r_nint(float *x);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
200 float r_int(float *x);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
201 _Bool repetitive_variables_not_valid = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
202 _Bool nullzeit_unter60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
203 //enum VPM_CALC_STATUS{CALC_END,CALC_BEGIN,CALC_NULLZEIT };
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
204 int vpm_calc_status;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
205 _Bool buehlmann_wait_exceeded = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
206
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
207 SLifeData* pInput = NULL;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
208 SVpm* pVpm = NULL;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
209 SDecoinfo* pDecoInfo = NULL;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
210 SDiveSettings* pDiveSettings = NULL;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
211 float r_nint(float *x)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
212 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
213 return( (*x)>=0 ?
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
214 floorf(*x + 0.5f) : -floorf(0.5f - *x) );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
215 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
216
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
217 float r_int(float *x)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
218 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
219 return( (*x>0) ? floorf(*x) : -floorf(- *x) );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
220 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
221
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
222 /** private functions
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
223 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
224 int onset_of_impermeability(float *starting_ambient_pressure, float *ending_ambient_pressure, float *rate, short *i);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
225 int radius_root_finder (float *a, float *b, float *c,float *low_bound, float *high_bound, float *ending_radius);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
226 int nuclear_regeneration(float *dive_time);// clock_();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
227 int calc_deco_ceiling(float *deco_ceiling_depth,_Bool fallowablw);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
228
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
229 int calc_barometric_pressure(float *altitude);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
230 //extern /* Subroutine */ int vpm_repetitive_algorithm();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
231 //extern /* Subroutine */ int gas_loadings_surface_interval();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
232 int critical_volume(float *deco_phase_volume_time); ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
233 int calc_start_of_deco_zone(float *starting_depth, float *rate, float *depth_start_of_deco_zone);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
234
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
235 int calc_initial_allowable_gradient(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
236 void decompression_stop(float *deco_stop_depth, float *step_size, _Bool final_deco_calculation);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
237 int gas_loadings_ascent_descen(float* helium_pressure, float* nitrogen_pressure, float starting_depth,float ending_depth, float rate,_Bool check_gas_change);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
238
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
239 int calc_surface_phase_volume_time(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
240 int calc_max_actual_gradient(float *deco_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
241 int projected_ascent(float *starting_depth, float *rate, float *deco_stop_depth, float *step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
242 void vpm_calc_deco(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
243 int vpm_calc_critcal_volume(_Bool begin,_Bool calc_nulltime);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
244 int vpm_check_converged(_Bool calc_nulltime);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
245 int vpm_calc_final_deco(_Bool begin);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
246 void BOYLES_LAW_COMPENSATION (float* First_Stop_Depth,float * Deco_Stop_Depth,float* Step_Size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
247 int vpm_calc_nullzeit(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
248 int vpm_repetitive_algorithm(float *surface_interval_time);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
249 void vpm_init_1(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
250
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
251 void vpm_calc_deco_ceiling(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
252
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
253 //extern /* Subroutine */ int gas_loadings_constant_depth();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
254 //extern /* Subroutine */ int vpm_altitude_dive_algorithm();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
255 //extern /* Subroutine */ int calc_max_actual_gradient(),
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
256 //projected_ascent();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
257
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
258 void ______X_X_X___________________________________________________________(void);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
259
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
260 //#define ARGGG
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
261
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
262 void vpm_reset_variables(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
263 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
264 repetitive_variables_not_valid = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
265 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
266
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
267 void vpm_init_1(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
268 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
269 units_equal_msw = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
270 units_equal_fsw = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
271 altitude_dive_algorithm_off= true; //!Options: ON or OFF
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
272 minimum_deco_stop_time=1.0; //!Options: float positive number
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
273 critical_volume_algorithm_off= false; //!Options: ON or OFF
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
274 run_time = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
275 //barometric_pressure = dive_data.surface * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
276
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
277 //mix_number = dive_data.selected_gas + 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
278
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
279 max_first_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
280 max_deco_ceiling_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
281 //deco_zone_reached = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
282 depth_start_of_deco_calc = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
283 depth_start_of_deco_zone = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
284 first_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
285 run_time_start_of_deco_zone = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
286
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
287 gCNS_VPM = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
288 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
289
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
290 float vpm_get_CNS(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
291 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
292 return gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
293 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
294
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
295 int vpm_calc(SLifeData* pINPUT,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
296 SDiveSettings* pSettings,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
297 SVpm* pVPM,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
298 SDecoinfo*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
299 pDECOINFO,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
300 int calc_what)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
301 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
302 vpm_init_1();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
303 //decom_CreateGasChangeList(pSettings, pINPUT);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
304 vpm_calc_what = calc_what;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
305 /**clear decoInfo*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
306 pDECOINFO->output_time_to_surface_seconds = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
307 pDECOINFO->output_ndl_seconds = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
308 pDECOINFO->output_ceiling_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
309 pDECOINFO->output_relative_gradient = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
310 uint8_t tmp_calc_status;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
311 for(int i=0;i<DECOINFO_STRUCT_MAX_STOPS;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
312 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
313 pDECOINFO->output_stop_length_seconds[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
314 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
315
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
316 if(pINPUT->dive_time_seconds < 10)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
317 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
318 vpm_calc_status = CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
319 return vpm_calc_status;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
320 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
321 pVpm = pVPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
322 pInput = pINPUT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
323 pDecoInfo = pDECOINFO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
324 pDiveSettings = pSettings;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
325
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
326 if(vpm_calc_status == CALC_NULLZEIT)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
327 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
328 tmp_calc_status = vpm_calc_nullzeit();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
329 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
330 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
331 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
332 tmp_calc_status = CALC_BEGIN;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
333 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
334 //Normal Deco calculation
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
335 if(tmp_calc_status != CALC_NULLZEIT)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
336 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
337 max_first_stop_depth = pVpm->max_first_stop_depth_save;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
338 run_time_start_of_deco_zone = pVpm->run_time_start_of_deco_zone_save;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
339 depth_start_of_deco_zone = pVpm->depth_start_of_deco_zone_save;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
340 for (int i = 0; i < 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
341 helium_pressure[i] = pInput->tissue_helium_bar[i] * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
342 nitrogen_pressure[i] = pInput->tissue_nitrogen_bar[i] * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
343 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
344 vpm_calc_deco();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
345 tmp_calc_status = vpm_calc_critcal_volume(true,false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
346 if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
347 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
348 pVpm->max_first_stop_depth_save = max_first_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
349 pVpm->run_time_start_of_deco_zone_save = run_time_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
350 pVpm->depth_start_of_deco_zone_save = depth_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
351 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
352 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
353
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
354 //Only Decostops not futute stops
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
355 if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
356 vpm_calc_status = tmp_calc_status;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
357 return vpm_calc_status;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
358 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
359
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
360 void vpm_saturation_after_ascent(SLifeData* input)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
361 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
362 int i = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
363 for (i = 0; i < 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
364 pInput->tissue_helium_bar[i] = helium_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
365 pInput->tissue_nitrogen_bar[i] = nitrogen_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
366 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
367 pInput->pressure_ambient_bar = pInput->pressure_surface_bar;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
368 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
369 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
370 /* NOTE ABOUT PRESSURE UNITS USED IN CALCULATIONS: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
371 /* It is the convention in decompression calculations to compute all gas */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
372 /* loadings, absolute pressures, partial pressures, etc., in the units of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
373 /* depth pressure that you are diving - either feet of seawater (fsw) or */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
374 /* meters of seawater (msw). This program follows that convention with the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
375 /* the exception that all VPM calculations are performed in SI units (by */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
376 /* necessity). Accordingly, there are several conversions back and forth */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
377 /* between the diving pressure units and the SI units. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
378 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
379 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
380 /* FUNCTION SUBPROGRAM FOR GAS LOADING CALCULATIONS - ASCENT AND DESCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
381 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
382
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
383
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
384
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
385 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
386 /* SUBROUTINE GAS_LOADINGS_ASCENT_DESCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
387 /* Purpose: This subprogram applies the Schreiner equation to update the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
388 /* gas loadings (partial pressures of helium and nitrogen) in the half-time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
389 /* compartments due to a linear ascent or descent segment at a constant rate. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
390 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
391
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
392 int gas_loadings_ascent_descen(float* helium_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
393 float* nitrogen_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
394 float starting_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
395 float ending_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
396 float rate,_Bool check_gas_change)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
397 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
398 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
399 float initial_inspired_n2_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
400 initial_inspired_he_pressure, nitrogen_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
401 last_run_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
402 starting_ambient_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
403 ending_ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
404 float initial_helium_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
405 float initial_nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
406 float helium_rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
407 float fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
408 float fraction_helium_end;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
409 float fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
410 float fraction_nitrogen_end;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
411 float ending_depth_tmp = ending_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
412 float segment_time_tmp = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
413 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
414 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
415 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
416 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
417 segment_time = (ending_depth_tmp - starting_depth) / rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
418 last_run_time = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
419 run_time = last_run_time + segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
420 do {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
421 ending_depth_tmp = ending_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
422 if (starting_depth > ending_depth && check_gas_change && number_of_changes > 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
423 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
424 for (i = 1; i < number_of_changes; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
425 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
426 if (depth_change[i] < starting_depth && depth_change[i] > ending_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
427 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
428 ending_depth_tmp = depth_change[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
429 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
430 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
431 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
432 for (i = 1; i < number_of_changes; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
433 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
434 if (depth_change[i] >= starting_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
435 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
436 mix_number = mix_change[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
437 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
438 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
439 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
440 segment_time_tmp = (ending_depth_tmp - starting_depth) / rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
441 ending_ambient_pressure = ending_depth_tmp + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
442 starting_ambient_pressure = starting_depth + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
443 decom_get_inert_gases( starting_ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]), &fraction_nitrogen_begin, &fraction_helium_begin );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
444 decom_get_inert_gases( ending_ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]), &fraction_nitrogen_end, &fraction_helium_end );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
445
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
446 initial_inspired_he_pressure = (starting_ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
447 initial_inspired_n2_pressure = (starting_ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
448 //helium_rate = *rate * fraction_helium[mix_number - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
449 helium_rate = ((ending_ambient_pressure - WATER_VAPOR_PRESSURE)* fraction_helium_end - initial_inspired_he_pressure)/segment_time_tmp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
450 //nitrogen_rate2 = *rate * fraction_nitrogen[mix_number - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
451 nitrogen_rate = ((ending_ambient_pressure - WATER_VAPOR_PRESSURE)* fraction_nitrogen_end - initial_inspired_n2_pressure)/segment_time_tmp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
452
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
453
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
454 decom_oxygen_calculate_cns_stage_SchreinerStyle(segment_time_tmp,&pDiveSettings->decogaslist[mix_number],starting_ambient_pressure/10,ending_ambient_pressure/10,&gCNS_VPM);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
455 //if(fabs(nitrogen_rate - nitrogen_rate2) > 0.000001)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
456 //return -2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
457 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
458 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
459 initial_helium_pressure[i - 1] = helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
460 initial_nitrogen_pressure[i - 1] = nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
461 helium_pressure[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
462 schreiner_equation__2(&initial_inspired_he_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
463 &helium_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
464 &segment_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
465 &HELIUM_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
466 &initial_helium_pressure[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
467 nitrogen_pressure[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
468 schreiner_equation__2(&initial_inspired_n2_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
469 &nitrogen_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
470 &segment_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
471 &NITROGEN_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
472 &initial_nitrogen_pressure[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
473
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
474 //nextround???
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
475
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
476 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
477 starting_depth = ending_depth_tmp;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
478 } while(ending_depth_tmp > ending_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
479
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
480 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
481 } /* gas_loadings_ascent_descen */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
482
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
483 float last_phase_volume_time[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
484 float n2_pressure_start_of_deco_zone[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
485 float he_pressure_start_of_deco_zone[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
486 float phase_volume_time[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
487 float n2_pressure_start_of_ascent[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
488 float he_pressure_start_of_ascent[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
489 float run_time_start_of_deco_calc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
490 float starting_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
491 float last_run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
492 float deco_phase_volume_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
493
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
494 float run_time_start_of_ascent;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
495
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
496 float rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
497 float step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
498 _Bool vpm_violates_buehlmann;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
499
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
500 void vpm_calc_deco(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
501 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
502 /* System generated locals */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
503
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
504 //float deepest_possible_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
505 // altitude_of_dive,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
506 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
507 int j = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
508
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
509 // float rounding_operation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
510
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
511 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
512 /* INPUT PARAMETERS TO BE USED FOR STAGED DECOMPRESSION AND SAVE IN ARRAYS. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
513 /* ASSIGN INITAL PARAMETERS TO BE USED AT START OF ASCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
514 /* The user has the ability to change mix, ascent rate, and step size in any */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
515 /* combination at any depth during the ascent. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
516 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
517
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
518 run_time = ((float)pInput->dive_time_seconds )/ 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
519 count_critical_volume_iteration = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
520 number_of_changes = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
521
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
522 barometric_pressure = pInput->pressure_surface_bar * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
523 depth_change[0] =(pInput->pressure_ambient_bar - pInput->pressure_surface_bar)* 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
524 mix_change[0] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
525 rate_change[0 ] = -10;// neu 160215 hw, zuvor: -12;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
526 step_size_change[0] = 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
527 vpm_violates_buehlmann = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
528
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
529 for (i = 1; i < BUEHLMANN_STRUCT_MAX_GASES; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
530 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
531 depth_change[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
532 mix_change[i] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
533 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
534 j = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
535
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
536 for (i = 1; i < BUEHLMANN_STRUCT_MAX_GASES; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
537 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
538 if(pDiveSettings->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero >= depth_change[0] + 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
539 continue;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
540
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
541 if(pDiveSettings->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero <= 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
542 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
543
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
544 j++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
545 number_of_changes ++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
546 depth_change[j] = pDiveSettings->decogaslist[i].change_during_ascent_depth_meter_otherwise_zero ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
547 mix_change[j] = i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
548 rate_change[j] = -10;// neu 160215 hw, zuvor: -12;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
549 step_size_change[j] = 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
550 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
551
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
552 starting_depth = depth_change[0] ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
553 mix_number = mix_change[0] ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
554 rate = rate_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
555 step_size = step_size_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
556
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
557 for (i = 0; i < 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
558 he_pressure_start_of_ascent[i ] = helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
559 n2_pressure_start_of_ascent[i] = nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
560 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
561 run_time_start_of_ascent = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
562 if(starting_depth <= depth_start_of_deco_zone && vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
563 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
564 pVpm->deco_zone_reached = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
565 depth_start_of_deco_calc = starting_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
566 critical_volume_algorithm_off = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
567 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
568 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
569 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
570 //if(deco_zone_reached)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
571 //{
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
572 pVpm->deco_zone_reached = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
573 critical_volume_algorithm_off = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
574 //max_first_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
575 //max_first_stop_depth_save = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
576 //}
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
577 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
578 /* BEGIN PROCESS OF ASCENT AND DECOMPRESSION */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
579 /* First, calculate the regeneration of critical radii that takes place over */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
580 /* the dive time. The regeneration time constant has a time scale of weeks */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
581 /* so this will have very little impact on dives of normal length, but will */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
582 /* have major impact for saturation dives. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
583 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
584
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
585 nuclear_regeneration(&run_time);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
586
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
587 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
588 /* CALCULATE INITIAL ALLOWABLE GRADIENTS FOR ASCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
589 /* This is based on the maximum effective crushing pressure on critical radii */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
590 /* in each compartment achieved during the dive profile. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
591 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
592
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
593 calc_initial_allowable_gradient();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
594
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
595 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
596 /* SAVE VARIABLES AT START OF ASCENT (END OF BOTTOM TIME) SINCE THESE WILL */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
597 /* BE USED LATER TO COMPUTE THE FINAL ASCENT PROFILE THAT IS WRITTEN TO THE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
598 /* OUTPUT FILE. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
599 /* The VPM uses an iterative process to compute decompression schedules so */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
600 /* there will be more than one pass through the decompression loop. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
601 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
602
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
603 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
604 /* CALCULATE THE DEPTH WHERE THE DECOMPRESSION ZONE BEGINS FOR THIS PROFILE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
605 /* BASED ON THE INITIAL ASCENT PARAMETERS AND WRITE THE DEEPEST POSSIBLE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
606 /* DECOMPRESSION STOP DEPTH TO THE OUTPUT FILE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
607 /* Knowing where the decompression zone starts is very important. Below */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
608 /* that depth there is no possibility for bubble formation because there */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
609 /* will be no supersaturation gradients. Deco stops should never start */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
610 /* below the deco zone. The deepest possible stop deco stop depth is */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
611 /* defined as the next "standard" stop depth above the point where the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
612 /* leading compartment enters the deco zone. Thus, the program will not */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
613 /* base this calculation on step sizes larger than 10 fsw or 3 msw. The */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
614 /* deepest possible stop depth is not used in the program, per se, rather */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
615 /* it is information to tell the diver where to start putting on the brakes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
616 /* during ascent. This should be prominently displayed by any deco program. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
617 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
618
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
619 calc_start_of_deco_zone(&starting_depth, &rate, &depth_start_of_deco_zone);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
620 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
621 /* TEMPORARILY ASCEND PROFILE TO THE START OF THE DECOMPRESSION ZONE, SAVE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
622 /* VARIABLES AT THIS POINT, AND INITIALIZE VARIABLES FOR CRITICAL VOLUME LOOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
623 /* The iterative process of the VPM Critical Volume Algorithm will operate */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
624 /* only in the decompression zone since it deals with excess gas volume */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
625 /* released as a result of supersaturation gradients (not possible below the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
626 /* decompression zone). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
627 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
628 gas_loadings_ascent_descen(helium_pressure,nitrogen_pressure, starting_depth, depth_start_of_deco_zone, rate, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
629
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
630 run_time_start_of_deco_zone = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
631 depth_start_of_deco_calc = depth_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
632
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
633 for (i = 0; i < 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
634 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
635 pVpm->max_actual_gradient[i] = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
636 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
637 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
638
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
639 for (i = 0; i < 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
640 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
641 surface_phase_volume_time[i] = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
642 last_phase_volume_time[i] = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
643 he_pressure_start_of_deco_zone[i] = helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
644 n2_pressure_start_of_deco_zone[i] = nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
645 //pVpm->max_actual_gradient[i] = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
646 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
647 run_time_start_of_deco_calc = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
648 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
649 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
650 /* START OF CRITICAL VOLUME LOOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
651 /* This loop operates between Lines 50 and 100. If the Critical Volume */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
652 /* Algorithm is toggled "off" in the program settings, there will only be */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
653 /* one pass through this loop. Otherwise, there will be two or more passes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
654 /* through this loop until the deco schedule is "converged" - that is when a */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
655 /* comparison between the phase volume time of the present iteration and the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
656 /* last iteration is less than or equal to one minute. This implies that */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
657 /* the volume of released gas in the most recent iteration differs from the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
658 /* "critical" volume limit by an acceptably small amount. The critical */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
659 /* volume limit is set by the Critical Volume Parameter Lambda in the program */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
660 /* settings (default setting is 7500 fsw-min with adjustability range from */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
661 /* from 6500 to 8300 fsw-min according to Bruce Wienke). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
662 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
663 /* L50: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
664
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
665 float deco_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
666 int vpm_calc_critcal_volume(_Bool begin,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
667 _Bool calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
668 { /* loop will run continuous there is an exit stateme */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
669
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
670 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
671
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
672 float rounding_operation2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
673 //float ending_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
674 float deco_ceiling_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
675
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
676 //float deco_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
677 int count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
678 _Bool first_stop;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
679 int dp = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
680 float tissue_He_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
681 float tissue_N2_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
682 float vpm_buehlmann_safety_gradient = 1.0f - (((float)pDiveSettings->vpm_conservatism) / 40);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
683 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
684 /* CALCULATE CURRENT DECO CEILING BASED ON ALLOWABLE SUPERSATURATION */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
685 /* GRADIENTS AND SET FIRST DECO STOP. CHECK TO MAKE SURE THAT SELECTED STEP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
686 /* SIZE WILL NOT ROUND UP FIRST STOP TO A DEPTH THAT IS BELOW THE DECO ZONE. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
687 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
688 if(begin)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
689 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
690 if(depth_start_of_deco_calc < max_first_stop_depth )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
691 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
692 if(vpm_b)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
693 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
694 BOYLES_LAW_COMPENSATION(&max_first_stop_depth, &depth_start_of_deco_calc, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
695 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
696 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
697 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
698 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
699 calc_deco_ceiling(&deco_ceiling_depth, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
700
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
701
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
702 if (deco_ceiling_depth <= 0.0f) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
703 deco_stop_depth = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
704 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
705 rounding_operation2 = deco_ceiling_depth / step_size + ( float)0.5f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
706 deco_stop_depth = r_nint(&rounding_operation2) * step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
707 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
708
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
709 // buehlmann safety
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
710 if(buehlmannSafety)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
711 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
712 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
713 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
714 tissue_He_saturation[i] = helium_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
715 tissue_N2_saturation[i] = nitrogen_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
716 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
717
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
718 if(!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_stop_depth / 10.0f) + pInput->pressure_surface_bar))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
719 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
720
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
721 vpm_violates_buehlmann = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
722 do {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
723 deco_stop_depth += 3;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
724 } while (!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_stop_depth / 10.0f) + pInput->pressure_surface_bar));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
725 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
726 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
727
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
728 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
729 /* PERFORM A SEPARATE "PROJECTED ASCENT" OUTSIDE OF THE MAIN PROGRAM TO MAKE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
730 /* SURE THAT AN INCREASE IN GAS LOADINGS DURING ASCENT TO THE FIRST STOP WILL */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
731 /* NOT CAUSE A VIOLATION OF THE DECO CEILING. IF SO, ADJUST THE FIRST STOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
732 /* DEEPER BASED ON STEP SIZE UNTIL A SAFE ASCENT CAN BE MADE. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
733 /* Note: this situation is a possibility when ascending from extremely deep */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
734 /* dives or due to an unusual gas mix selection. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
735 /* CHECK AGAIN TO MAKE SURE THAT ADJUSTED FIRST STOP WILL NOT BE BELOW THE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
736 /* DECO ZONE. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
737 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
738 if (deco_stop_depth < depth_start_of_deco_calc)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
739 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
740 projected_ascent(&depth_start_of_deco_calc, &rate, &deco_stop_depth, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
741 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
742
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
743 /*if (deco_stop_depth > depth_start_of_deco_zone) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
744 printf("\t\n");
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
745 printf(fmt_905);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
746 printf(fmt_900);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
747 printf("\nPROGRAM TERMINATED\n");
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
748 exit(1);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
749 }*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
750
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
751 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
752 /* HANDLE THE SPECIAL CASE WHEN NO DECO STOPS ARE REQUIRED - ASCENT CAN BE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
753 /* MADE DIRECTLY TO THE SURFACE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
754 /* Write ascent data to output file and exit the Critical Volume Loop. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
755 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
756
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
757 if (deco_stop_depth == 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
758 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
759 if(calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
760 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
761 return CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
762 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
763 if(pVpm->deco_zone_reached)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
764 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
765 for(dp = 0;dp < DECOINFO_STRUCT_MAX_STOPS;dp++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
766 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
767 pDecoInfo->output_stop_length_seconds[dp] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
768 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
769 pDecoInfo->output_ndl_seconds = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
770 /*max_first_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
771 deco_zone_reached = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
772 depth_start_of_deco_calc = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
773 depth_start_of_deco_zone = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
774 first_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
775 max_first_stop_depth_save = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
776 depth_start_of_deco_zone_save = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
777 run_time_start_of_deco_zone_save = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
778 tts[DECOSTOPS] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
779 tts[NULLZEIT] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
780 tts[FUTURESTOPS] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
781 nullzeit_unter60 = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
782 vpm_calc_status = CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
783 vpm_calc_what = DECOSTOPS;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
784 float surfacetime = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
785 vpm_repetitive_algorithm(&surfacetime);*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
786
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
787 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
788
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
789 return CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
790 /* exit the critical volume l */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
791 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
792
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
793 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
794 /* ASSIGN VARIABLES FOR ASCENT FROM START OF DECO ZONE TO FIRST STOP. SAVE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
795 /* FIRST STOP DEPTH FOR LATER USE WHEN COMPUTING THE FINAL ASCENT PROFILE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
796 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
797 deco_stop_depth = fmaxf(deco_stop_depth,(float)pDiveSettings->last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
798 starting_depth = depth_start_of_deco_calc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
799 first_stop_depth = deco_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
800 first_stop = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
801 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
802 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
803 /* DECO STOP LOOP BLOCK WITHIN CRITICAL VOLUME LOOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
804 /* This loop computes a decompression schedule to the surface during each */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
805 /* iteration of the critical volume loop. No output is written from this */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
806 /* loop, rather it computes a schedule from which the in-water portion of the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
807 /* total phase volume time (Deco_Phase_Volume_Time) can be extracted. Also, */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
808 /* the gas loadings computed at the end of this loop are used the subroutine */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
809 /* which computes the out-of-water portion of the total phase volume time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
810 /* (Surface_Phase_Volume_Time) for that schedule. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
811
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
812 /* Note that exit is made from the loop after last ascent is made to a deco */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
813 /* stop depth that is less than or equal to zero. A final deco stop less */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
814 /* than zero can happen when the user makes an odd step size change during */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
815 /* ascent - such as specifying a 5 msw step size change at the 3 msw stop! */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
816 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
817
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
818 while(true) /* loop will run continuous there is an break statement */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
819 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
820 if(starting_depth > deco_stop_depth )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
821 gas_loadings_ascent_descen(helium_pressure, nitrogen_pressure, starting_depth, deco_stop_depth, rate,first_stop);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
822
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
823 first_stop = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
824 if (deco_stop_depth <= 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
825 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
826 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
827 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
828 if (number_of_changes > 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
829 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
830 int i1 = number_of_changes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
831 for (i = 2; i <= i1; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
832 if (depth_change[i - 1] >= deco_stop_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
833 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
834 mix_number = mix_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
835 rate = rate_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
836 step_size = step_size_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
837 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
838 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
839 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
840 if(vpm_b)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
841 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
842 float fist_stop_depth2 = fmaxf(first_stop_depth,max_first_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
843 BOYLES_LAW_COMPENSATION(&fist_stop_depth2, &deco_stop_depth, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
844 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
845 decompression_stop(&deco_stop_depth, &step_size, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
846 starting_depth = deco_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
847
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
848 if(deco_stop_depth == (float)pDiveSettings->last_stop_depth_bar * 10)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
849 deco_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
850 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
851 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
852 deco_stop_depth = deco_stop_depth - step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
853 deco_stop_depth = fmaxf(deco_stop_depth,(float)pDiveSettings->last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
854 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
855
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
856 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
857 //if(count > 14)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
858 //return CALC_CRITICAL2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
859 /* L60: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
860 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
861
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
862 return vpm_check_converged(calc_nulltime);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
863 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
864 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
865 /* COMPUTE TOTAL PHASE VOLUME TIME AND MAKE CRITICAL VOLUME COMPARISON */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
866 /* The deco phase volume time is computed from the run time. The surface */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
867 /* phase volume time is computed in a subroutine based on the surfacing gas */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
868 /* loadings from previous deco loop block. Next the total phase volume time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
869 /* (in-water + surface) for each compartment is compared against the previous */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
870 /* total phase volume time. The schedule is converged when the difference is */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
871 /* less than or equal to 1 minute in any one of the 16 compartments. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
872
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
873 /* Note: the "phase volume time" is somewhat of a mathematical concept. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
874 /* It is the time divided out of a total integration of supersaturation */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
875 /* gradient x time (in-water and surface). This integration is multiplied */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
876 /* by the excess bubble number to represent the amount of free-gas released */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
877 /* as a result of allowing a certain number of excess bubbles to form. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
878 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
879 /* end of deco stop loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
880
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
881 int vpm_check_converged(_Bool calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
882 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
883
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
884 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
885 float critical_volume_comparison;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
886 float r1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
887 _Bool schedule_converged = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
888
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
889
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
890 deco_phase_volume_time = run_time - run_time_start_of_deco_zone;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
891 calc_surface_phase_volume_time();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
892
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
893 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
894 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
895 phase_volume_time[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
896 deco_phase_volume_time + surface_phase_volume_time[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
897 critical_volume_comparison = (r1 = phase_volume_time[i - 1] - last_phase_volume_time[i - 1], fabs(r1));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
898
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
899 if (critical_volume_comparison <= 1.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
900 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
901 schedule_converged = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
902 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
903 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
904
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
905 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
906 /* CRITICAL VOLUME DECISION TREE BETWEEN LINES 70 AND 99 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
907 /* There are two options here. If the Critical Volume Agorithm setting is */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
908 /* "on" and the schedule is converged, or the Critical Volume Algorithm */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
909 /* setting was "off" in the first place, the program will re-assign variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
910 /* to their values at the start of ascent (end of bottom time) and process */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
911 /* a complete decompression schedule once again using all the same ascent */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
912 /* parameters and first stop depth. This decompression schedule will match */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
913 /* the last iteration of the Critical Volume Loop and the program will write */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
914 /* the final deco schedule to the output file. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
915
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
916 /* Note: if the Critical Volume Agorithm setting was "off", the final deco */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
917 /* schedule will be based on "Initial Allowable Supersaturation Gradients." */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
918 /* If it was "on", the final schedule will be based on "Adjusted Allowable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
919 /* Supersaturation Gradients" (gradients that are "relaxed" as a result of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
920 /* the Critical Volume Algorithm). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
921
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
922 /* If the Critical Volume Agorithm setting is "on" and the schedule is not */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
923 /* converged, the program will re-assign variables to their values at the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
924 /* start of the deco zone and process another trial decompression schedule. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
925 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
926 /* L70: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
927 //Not more than 4 iteration allowed
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
928 count_critical_volume_iteration++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
929 if(count_critical_volume_iteration > 4)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
930 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
931 //return CALC_FINAL_DECO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
932 if(calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
933 return CALC_FINAL_DECO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
934 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
935 return vpm_calc_final_deco(true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
936 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
937 if (schedule_converged || critical_volume_algorithm_off)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
938 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
939
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
940 //return CALC_FINAL_DECO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
941 if(calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
942 return CALC_FINAL_DECO;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
943 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
944 return vpm_calc_final_deco(true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
945 /* final deco schedule */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
946 /* exit critical volume l */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
947
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
948 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
949 /* IF SCHEDULE NOT CONVERGED, COMPUTE RELAXED ALLOWABLE SUPERSATURATION */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
950 /* GRADIENTS WITH VPM CRITICAL VOLUME ALGORITHM AND PROCESS ANOTHER */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
951 /* ITERATION OF THE CRITICAL VOLUME LOOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
952 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
953
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
954 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
955 critical_volume(&deco_phase_volume_time);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
956 deco_phase_volume_time = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
957 run_time = run_time_start_of_deco_calc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
958 starting_depth = depth_start_of_deco_calc;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
959 mix_number = mix_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
960 rate = rate_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
961 step_size = step_size_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
962 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
963 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
964 last_phase_volume_time[i - 1] = phase_volume_time[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
965 helium_pressure[i - 1] = he_pressure_start_of_deco_zone[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
966 nitrogen_pressure[i - 1] = n2_pressure_start_of_deco_zone[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
967 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
968 if(calc_nulltime)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
969 return CALC_CRITICAL;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
970 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
971 return vpm_calc_critcal_volume(true, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
972 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
973 /* end of critical volume decision */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
974 /* L100: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
975 // }/* end of critical vol loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
976 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
977
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
978 void vpm_calc_deco_ceiling(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
979 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
980
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
981 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
982 // hw 1601209 float r1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
983 // hw 1601209 float stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
984 // hw 1601209 int count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
985 //static int dp_max;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
986 //static float surfacetime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
987 // _Bool first_stop = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
988 float tissue_He_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
989 float tissue_N2_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
990 float vpm_buehlmann_safety_gradient = 1.0f - (((float)pDiveSettings->vpm_conservatism) / 40);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
991 //max_first_stop_depth = fmaxf(first_stop_depth,max_first_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
992
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
993 /** CALC DECO Ceiling ******************************************************************/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
994 /** Not when Future stops */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
995 if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
996 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
997
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
998 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
999 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1000 helium_pressure[i - 1] = he_pressure_start_of_deco_zone[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1001 nitrogen_pressure[i - 1] = n2_pressure_start_of_deco_zone[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1002 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1003 run_time = run_time_start_of_ascent;// run_time_start_of_ascent;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1004 starting_depth = depth_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1005 mix_number = mix_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1006 rate = rate_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1007 //gas_loadings_ascent_descen(helium_pressure,nitrogen_pressure, starting_depth, depth_start_of_deco_calc, rate, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1008
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1009 float deco_ceiling_depth = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1010 if(depth_start_of_deco_calc > max_deco_ceiling_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1011 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1012 calc_deco_ceiling(&deco_ceiling_depth, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1013 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1014 if(buehlmannSafety)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1015 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1016 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1017 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1018 tissue_He_saturation[i] = helium_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1019 tissue_N2_saturation[i] = nitrogen_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1020 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1021
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1022 if(!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_ceiling_depth / 10.0f) + pInput->pressure_surface_bar))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1023 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1024
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1025 vpm_violates_buehlmann = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1026 do {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1027 deco_ceiling_depth += 0.1f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1028 } while (!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_ceiling_depth / 10.0f) + pInput->pressure_surface_bar));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1029 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1030 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1031
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1032 if (deco_ceiling_depth < depth_start_of_deco_calc)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1033 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1034 projected_ascent(&depth_start_of_deco_calc, &rate, &deco_ceiling_depth, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1035 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1036
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1037 max_deco_ceiling_depth = fmaxf(max_deco_ceiling_depth,deco_ceiling_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1038
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1039 if(depth_start_of_deco_calc > deco_ceiling_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1040 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1041 gas_loadings_ascent_descen(helium_pressure,nitrogen_pressure, depth_start_of_deco_calc,deco_ceiling_depth, rate, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1042 //surfacetime += segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1043 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1044
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1045 if(vpm_b)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1046 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1047 BOYLES_LAW_COMPENSATION(&max_deco_ceiling_depth, &deco_ceiling_depth, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1048 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1049 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1050
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1051 // buehlmann safety
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1052 if(vpm_violates_buehlmann)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1053 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1054 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1055 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1056 tissue_He_saturation[i] = helium_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1057 tissue_N2_saturation[i] = nitrogen_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1058 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1059
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1060 if(!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_ceiling_depth / 10.0f) + pInput->pressure_surface_bar))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1061 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1062
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1063 vpm_violates_buehlmann = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1064 do {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1065 deco_ceiling_depth += 0.1f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1066 } while (!decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (deco_ceiling_depth / 10.0f) + pInput->pressure_surface_bar));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1067 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1068 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1069 // output_ceiling_meter
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1070 if(deco_ceiling_depth > first_stop_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1071 deco_ceiling_depth = first_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1072 pDecoInfo->output_ceiling_meter = deco_ceiling_depth ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1073 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1074 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1075 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1076 pDecoInfo->output_ceiling_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1077 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1078
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1079 // fix hw 160627
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1080 if(pDecoInfo->output_ceiling_meter < 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1081 pDecoInfo->output_ceiling_meter = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1082
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1083 /*** End CALC ceiling ***************************************************/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1084 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1085
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1086
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1087 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1088 /* DECO STOP LOOP BLOCK FOR FINAL DECOMPRESSION SCHEDULE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1089 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1090
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1091 int vpm_calc_final_deco(_Bool begin)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1092 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1093 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1094 float r1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1095 float stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1096 int count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1097 static int dp_max;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1098 static float surfacetime;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1099 _Bool first_stop = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1100 // hw 1601209 float tissue_He_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1101 // hw 1601209 float tissue_N2_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1102 float vpm_buehlmann_safety_gradient = 1.0f - (((float)pDiveSettings->vpm_conservatism) / 40);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1103 max_first_stop_depth = fmaxf(first_stop_depth,max_first_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1104 if(begin)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1105 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1106 gCNS_VPM = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1107 dp_max = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1108 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1109 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1110 helium_pressure[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1111 he_pressure_start_of_ascent[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1112 nitrogen_pressure[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1113 n2_pressure_start_of_ascent[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1114 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1115 run_time = run_time_start_of_ascent;// run_time_start_of_ascent;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1116 starting_depth = depth_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1117 mix_number = mix_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1118 rate = rate_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1119 step_size = step_size_change[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1120 deco_stop_depth = first_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1121 max_first_stop_depth = fmaxf(first_stop_depth,max_first_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1122 last_run_time = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1123
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1124
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1125
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1126 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1127 /* DECO STOP LOOP BLOCK FOR FINAL DECOMPRESSION SCHEDULE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1128 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1129 surfacetime = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1130 first_stop = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1131 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1132
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1133 while(true) /* loop will run continuous until there is an break statement */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1134 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1135 if(starting_depth > deco_stop_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1136 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1137 gas_loadings_ascent_descen(helium_pressure,nitrogen_pressure, starting_depth,deco_stop_depth, rate, first_stop);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1138 surfacetime += segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1139 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1140
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1141 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1142 /* DURING FINAL DECOMPRESSION SCHEDULE PROCESS, COMPUTE MAXIMUM ACTUAL */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1143 /* SUPERSATURATION GRADIENT RESULTING IN EACH COMPARTMENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1144 /* If there is a repetitive dive, this will be used later in the VPM */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1145 /* Repetitive Algorithm to adjust the values for critical radii. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1146 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1147 if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1148 calc_max_actual_gradient(&deco_stop_depth);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1149
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1150 if (deco_stop_depth <= 0.0f) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1151 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1152 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1153 if (number_of_changes > 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1154 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1155 int i1 = number_of_changes;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1156 for (i = 2; i <= i1; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1157 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1158 if (depth_change[i - 1] >= deco_stop_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1159 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1160 mix_number = mix_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1161 rate = rate_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1162 step_size = step_size_change[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1163 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1164 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1165 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1166
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1167 if(first_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1168 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1169 run_time_first_stop = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1170 first_stop = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1171 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1172 if(vpm_b)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1173 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1174 BOYLES_LAW_COMPENSATION(&max_first_stop_depth, &deco_stop_depth, &step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1175 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1176 decompression_stop(&deco_stop_depth, &step_size, true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1177
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1178 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1179 /* This next bit justs rounds up the stop time at the first stop to be in */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1180 /* whole increments of the minimum stop time (to make for a nice deco table). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1181 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1182
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1183 if (last_run_time == 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1184 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1185 r1 = segment_time / minimum_deco_stop_time + 0.5f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1186 stop_time = r_int(&r1) * minimum_deco_stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1187 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1188 stop_time = run_time - last_run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1189 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1190 stop_time = segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1191 surfacetime += stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1192 if((vpm_calc_what == DECOSTOPS) || (vpm_calc_what == BAILOUTSTOPS))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1193 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1194 int dp = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1195 if(deco_stop_depth == (float)pDiveSettings->last_stop_depth_bar * 10)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1196 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1197 dp = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1198 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1199 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1200 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1201 dp = 1 + (int)((deco_stop_depth - (pDiveSettings->input_second_to_last_stop_depth_bar * 10)) / step_size);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1202 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1203 dp_max = (int)fmaxf(dp_max,dp);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1204 if(dp < DECOINFO_STRUCT_MAX_STOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1205 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1206 int stop_time_seconds = fminf((999 * 60), (int)(stop_time *60));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1207 //
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1208
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1209 //if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1210 pDecoInfo->output_stop_length_seconds[dp] = (unsigned short)stop_time_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1211 //else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1212 //decostop_bailout[dp] = (unsigned short)stop_time_seconds;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1213 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1214 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1215
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1216
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1217 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1218 /* DURING FINAL DECOMPRESSION SCHEDULE, IF MINIMUM STOP TIME PARAMETER IS A */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1219 /* WHOLE NUMBER (i.e. 1 minute) THEN WRITE DECO SCHEDULE USING short */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1220 /* NUMBERS (looks nicer). OTHERWISE, USE DECIMAL NUMBERS. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1221 /* Note: per the request of a noted exploration diver(!), program now allows */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1222 /* a minimum stop time of less than one minute so that total ascent time can */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1223 /* be minimized on very long dives. In fact, with step size set at 1 fsw or */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1224 /* 0.2 msw and minimum stop time set at 0.1 minute (6 seconds), a near */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1225 /* continuous decompression schedule can be computed. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1226 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1227
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1228 starting_depth = deco_stop_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1229 if(deco_stop_depth == (float)pDiveSettings->last_stop_depth_bar * 10)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1230 deco_stop_depth = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1231 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1232 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1233 deco_stop_depth = deco_stop_depth - step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1234 deco_stop_depth = fmaxf(deco_stop_depth,(float)pDiveSettings->last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1235 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1236
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1237 last_run_time = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1238 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1239 //if(count > 14)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1240 //return CALC_FINAL_DECO2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1241 /* L80: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1242 } /* for final deco sche */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1243
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1244 if( (vpm_calc_what == DECOSTOPS) || (vpm_calc_what == BAILOUTSTOPS))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1245 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1246 for(int dp = dp_max +1;dp < DECOINFO_STRUCT_MAX_STOPS;dp++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1247 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1248 //if(vpm_calc_what == DECOSTOPS)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1249 pDecoInfo->output_stop_length_seconds[dp] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1250 //else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1251 //decostop_bailout[dp] = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1252 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1253 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1254 pDecoInfo->output_time_to_surface_seconds = (int)(surfacetime * 60);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1255 pDecoInfo->output_ndl_seconds = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1256
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1257 vpm_calc_deco_ceiling();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1258 /* end of deco stop lo */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1259 return CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1260 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1261
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1262 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1263 /* SUBROUTINE NUCLEAR_REGENERATION */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1264 /* Purpose: This subprogram calculates the regeneration of VPM critical */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1265 /* radii that takes place over the dive time. The regeneration time constant */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1266 /* has a time scale of weeks so this will have very little impact on dives of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1267 /* normal length, but will have a major impact for saturation dives. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1268 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1269
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1270 int nuclear_regeneration(float *dive_time)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1271 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1272 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1273 float crush_pressure_adjust_ratio_he,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1274 ending_radius_n2,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1275 ending_radius_he;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1276 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1277 float crushing_pressure_pascals_n2,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1278 crushing_pressure_pascals_he,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1279 adj_crush_pressure_n2_pascals,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1280 adj_crush_pressure_he_pascals,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1281 crush_pressure_adjust_ratio_n2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1282
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1283 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1284 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1285 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1286 /* First convert the maximum crushing pressure obtained for each compartment */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1287 /* to Pascals. Next, compute the ending radius for helium and nitrogen */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1288 /* critical nuclei in each compartment. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1289 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1290
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1291 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1292 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1293 crushing_pressure_pascals_he =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1294 pVpm->max_crushing_pressure_he[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1295 crushing_pressure_pascals_n2 =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1296 pVpm->max_crushing_pressure_n2[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1297 ending_radius_he =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1298 1.0f / (crushing_pressure_pascals_he /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1299 ((SKIN_COMPRESSION_GAMMAC - SURFACE_TENSION_GAMMA) * 2.0f) +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1300 1.0f / pVpm->adjusted_critical_radius_he[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1301 ending_radius_n2 =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1302 1.0f / (crushing_pressure_pascals_n2 /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1303 ((SKIN_COMPRESSION_GAMMAC - SURFACE_TENSION_GAMMA) * 2.0f) +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1304 1.0f / pVpm->adjusted_critical_radius_n2[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1305
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1306 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1307 /* A "regenerated" radius for each nucleus is now calculated based on the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1308 /* regeneration time constant. This means that after application of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1309 /* crushing pressure and reduction in radius, a nucleus will slowly grow */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1310 /* back to its original initial radius over a period of time. This */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1311 /* phenomenon is probabilistic in nature and depends on absolute temperature. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1312 /* It is independent of crushing pressure. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1313 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1314
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1315 regenerated_radius_he[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1316 pVpm->adjusted_critical_radius_he[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1317 (ending_radius_he - pVpm->adjusted_critical_radius_he[i - 1]) *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1318 expf(-(*dive_time) / REGENERATION_TIME_CONSTANT);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1319 regenerated_radius_n2[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1320 pVpm->adjusted_critical_radius_n2[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1321 (ending_radius_n2 - pVpm->adjusted_critical_radius_n2[i - 1]) *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1322 expf(-(*dive_time) / REGENERATION_TIME_CONSTANT);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1323
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1324 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1325 /* In order to preserve reference back to the initial critical radii after */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1326 /* regeneration, an "adjusted crushing pressure" for the nuclei in each */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1327 /* compartment must be computed. In other words, this is the value of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1328 /* crushing pressure that would have reduced the original nucleus to the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1329 /* to the present radius had regeneration not taken place. The ratio */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1330 /* for adjusting crushing pressure is obtained from algebraic manipulation */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1331 /* of the standard VPM equations. The adjusted crushing pressure, in lieu */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1332 /* of the original crushing pressure, is then applied in the VPM Critical */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1333 /* Volume Algorithm and the VPM Repetitive Algorithm. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1334 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1335
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1336 crush_pressure_adjust_ratio_he =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1337 ending_radius_he * (pVpm->adjusted_critical_radius_he[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1338 regenerated_radius_he[i - 1]) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1339 (regenerated_radius_he[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1340 (pVpm->adjusted_critical_radius_he[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1341 ending_radius_he));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1342 crush_pressure_adjust_ratio_n2 =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1343 ending_radius_n2 * (pVpm->adjusted_critical_radius_n2[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1344 regenerated_radius_n2[i - 1]) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1345 (regenerated_radius_n2[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1346 (pVpm->adjusted_critical_radius_n2[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1347 ending_radius_n2));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1348 adj_crush_pressure_he_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1349 crushing_pressure_pascals_he * crush_pressure_adjust_ratio_he;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1350 adj_crush_pressure_n2_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1351 crushing_pressure_pascals_n2 * crush_pressure_adjust_ratio_n2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1352 pVpm->adjusted_crushing_pressure_he[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1353 adj_crush_pressure_he_pascals / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1354 pVpm->adjusted_crushing_pressure_n2[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1355 adj_crush_pressure_n2_pascals / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1356 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1357 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1358 } /* nuclear_regeneration */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1359
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1360 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1361 /* SUBROUTINE CALC_INITIAL_ALLOWABLE_GRADIENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1362 /* Purpose: This subprogram calculates the initial allowable gradients for */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1363 /* helium and nitrogren in each compartment. These are the gradients that */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1364 /* will be used to set the deco ceiling on the first pass through the deco */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1365 /* loop. If the Critical Volume Algorithm is set to "off", then these */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1366 /* gradients will determine the final deco schedule. Otherwise, if the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1367 /* Critical Volume Algorithm is set to "on", these gradients will be further */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1368 /* "relaxed" by the Critical Volume Algorithm subroutine. The initial */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1369 /* allowable gradients are referred to as "PssMin" in the papers by Yount */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1370 /* and colleauges, i.e., the minimum supersaturation pressure gradients */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1371 /* that will probe bubble formation in the VPM nuclei that started with the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1372 /* designated minimum initial radius (critical radius). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1373
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1374 /* The initial allowable gradients are computed directly from the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1375 /* "regenerated" radii after the Nuclear Regeneration subroutine. These */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1376 /* gradients are tracked separately for helium and nitrogen. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1377 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1378
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1379 int calc_initial_allowable_gradient()
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1380 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1381 float initial_allowable_grad_n2_pa,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1382 initial_allowable_grad_he_pa;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1383 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1384
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1385 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1386 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1387 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1388 /* The initial allowable gradients are computed in Pascals and then converted */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1389 /* to the diving pressure units. Two different sets of arrays are used to */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1390 /* save the calculations - Initial Allowable Gradients and Allowable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1391 /* Gradients. The Allowable Gradients are assigned the values from Initial */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1392 /* Allowable Gradients however the Allowable Gradients can be changed later */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1393 /* by the Critical Volume subroutine. The values for the Initial Allowable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1394 /* Gradients are saved in a global array for later use by both the Critical */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1395 /* Volume subroutine and the VPM Repetitive Algorithm subroutine. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1396 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1397
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1398 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1399 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1400 initial_allowable_grad_n2_pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1401 SURFACE_TENSION_GAMMA * 2.0f *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1402 (SKIN_COMPRESSION_GAMMAC - SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1403 (regenerated_radius_n2[i - 1] * SKIN_COMPRESSION_GAMMAC);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1404
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1405 initial_allowable_grad_he_pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1406 SURFACE_TENSION_GAMMA * 2.0f *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1407 (SKIN_COMPRESSION_GAMMAC - SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1408 (regenerated_radius_he[i - 1] * SKIN_COMPRESSION_GAMMAC);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1409
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1410 pVpm->initial_allowable_gradient_n2[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1411 initial_allowable_grad_n2_pa / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1412
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1413 pVpm->initial_allowable_gradient_he[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1414 initial_allowable_grad_he_pa / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1415
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1416 allowable_gradient_he[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1417 pVpm->initial_allowable_gradient_he[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1418
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1419 allowable_gradient_n2[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1420 pVpm->initial_allowable_gradient_n2[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1421 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1422 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1423 } /* calc_initial_allowable_gradient */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1424
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1425 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1426 /* SUBROUTINE CALC_DECO_CEILING */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1427 /* Purpose: This subprogram calculates the deco ceiling (the safe ascent */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1428 /* depth) in each compartment, based on the allowable gradients, and then */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1429 /* finds the deepest deco ceiling across all compartments. This deepest */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1430 /* value (Deco Ceiling Depth) is then used by the Decompression Stop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1431 /* subroutine to determine the actual deco schedule. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1432 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1433
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1434 int calc_deco_ceiling(float *deco_ceiling_depth,_Bool fallowable)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1435 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1436 /* System generated locals */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1437 float r1, r2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1438 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1439 float weighted_allowable_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1440 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1441 float compartment_deco_ceiling[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1442 gas_loading,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1443 tolerated_ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1444 float gradient_he, gradient_n2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1445
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1446 if(!vpm_b)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1447 fallowable = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1448 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1449 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1450 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1451 /* Since there are two sets of allowable gradients being tracked, one for */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1452 /* helium and one for nitrogen, a "weighted allowable gradient" must be */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1453 /* computed each time based on the proportions of helium and nitrogen in */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1454 /* each compartment. This proportioning follows the methodology of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1455 /* Buhlmann/Keller. If there is no helium and nitrogen in the compartment, */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1456 /* such as after extended periods of oxygen breathing, then the minimum value */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1457 /* across both gases will be used. It is important to note that if a */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1458 /* compartment is empty of helium and nitrogen, then the weighted allowable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1459 /* gradient formula cannot be used since it will result in division by zero. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1460 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1461
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1462 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1463 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1464
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1465 // abfrage raus und pointer stattdessen
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1466 if(fallowable){
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1467 gradient_he = allowable_gradient_he[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1468 gradient_n2 = allowable_gradient_n2[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1469 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1470 else{
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1471 gradient_he = deco_gradient_he[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1472 gradient_n2 = deco_gradient_n2[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1473 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1474
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1475 gas_loading = helium_pressure[i - 1] + nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1476
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1477 if (gas_loading > 0)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1478 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1479 weighted_allowable_gradient =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1480 (gradient_he * helium_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1481 gradient_n2 * nitrogen_pressure[i - 1]) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1482 (helium_pressure[i - 1] + nitrogen_pressure[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1483
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1484 tolerated_ambient_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1485 gas_loading +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1486 CONSTANT_PRESSURE_OTHER_GASES -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1487 weighted_allowable_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1488 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1489 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1490 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1491 /* Computing MIN */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1492 r1 = gradient_he;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1493 r2 = gradient_n2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1494 weighted_allowable_gradient = fminf(r1,r2);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1495
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1496 tolerated_ambient_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1497 CONSTANT_PRESSURE_OTHER_GASES - weighted_allowable_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1498 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1499
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1500 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1501 /* The tolerated ambient pressure cannot be less than zero absolute, i.e., */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1502 /* the vacuum of outer space! */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1503 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1504
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1505 if (tolerated_ambient_pressure < 0) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1506 tolerated_ambient_pressure = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1507 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1508 compartment_deco_ceiling[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1509 tolerated_ambient_pressure - barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1510 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1511
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1512 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1513 /* The Deco Ceiling Depth is computed in a loop after all of the individual */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1514 /* compartment deco ceilings have been calculated. It is important that the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1515 /* Deco Ceiling Depth (max deco ceiling across all compartments) only be */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1516 /* extracted from the compartment values and not be compared against some */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1517 /* initialization value. For example, if MAX(Deco_Ceiling_Depth . .) was */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1518 /* compared against zero, this could cause a program lockup because sometimes */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1519 /* the Deco Ceiling Depth needs to be negative (but not less than zero */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1520 /* absolute ambient pressure) in order to decompress to the last stop at zero */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1521 /* depth. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1522 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1523
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1524 *deco_ceiling_depth = compartment_deco_ceiling[0];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1525 for (i = 2; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1526 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1527 /* Computing MAX */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1528 r1 = *deco_ceiling_depth;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1529 r2 = compartment_deco_ceiling[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1530 *deco_ceiling_depth = fmaxf(r1,r2);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1531 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1532 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1533 } /* calc_deco_ceiling */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1534
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1535
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1536
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1537 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1538 /* SUBROUTINE CALC_MAX_ACTUAL_GRADIENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1539 /* Purpose: This subprogram calculates the actual supersaturation gradient */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1540 /* obtained in each compartment as a result of the ascent profile during */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1541 /* decompression. Similar to the concept with crushing pressure, the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1542 /* supersaturation gradients are not cumulative over a multi-level, staged */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1543 /* ascent. Rather, it will be the maximum value obtained in any one discrete */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1544 /* step of the overall ascent. Thus, the program must compute and store the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1545 /* maximum actual gradient for each compartment that was obtained across all */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1546 /* steps of the ascent profile. This subroutine is invoked on the last pass */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1547 /* through the deco stop loop block when the final deco schedule is being */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1548 /* generated. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1549 /* */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1550 /* The max actual gradients are later used by the VPM Repetitive Algorithm to */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1551 /* determine if adjustments to the critical radii are required. If the max */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1552 /* actual gradient did not exceed the initial alllowable gradient, then no */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1553 /* adjustment will be made. However, if the max actual gradient did exceed */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1554 /* the intitial allowable gradient, such as permitted by the Critical Volume */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1555 /* Algorithm, then the critical radius will be adjusted (made larger) on the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1556 /* repetitive dive to compensate for the bubbling that was allowed on the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1557 /* previous dive. The use of the max actual gradients is intended to prevent */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1558 /* the repetitive algorithm from being overly conservative. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1559 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1560
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1561 int calc_max_actual_gradient(float *deco_stop_depth)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1562 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1563 /* System generated locals */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1564 float r1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1565
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1566 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1567 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1568 float compartment_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1569
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1570 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1571 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1572 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1573 /* Note: negative supersaturation gradients are meaningless for this */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1574 /* application, so the values must be equal to or greater than zero. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1575 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1576
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1577 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1578 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1579 compartment_gradient =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1580 helium_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1581 nitrogen_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1582 CONSTANT_PRESSURE_OTHER_GASES -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1583 (*deco_stop_depth + barometric_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1584 if (compartment_gradient <= 0.0f) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1585 compartment_gradient = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1586 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1587 /* Computing MAX */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1588 r1 = pVpm->max_actual_gradient[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1589 pVpm->max_actual_gradient[i - 1] = fmaxf(r1, compartment_gradient);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1590 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1591 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1592 } /* calc_max_actual_gradient */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1593
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1594 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1595 /* SUBROUTINE CALC_SURFACE_PHASE_VOLUME_TIME */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1596 /* Purpose: This subprogram computes the surface portion of the total phase */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1597 /* volume time. This is the time factored out of the integration of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1598 /* supersaturation gradient x time over the surface interval. The VPM */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1599 /* considers the gradients that allow bubbles to form or to drive bubble */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1600 /* growth both in the water and on the surface after the dive. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1601
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1602 /* This subroutine is a new development to the VPM algorithm in that it */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1603 /* computes the time course of supersaturation gradients on the surface */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1604 /* when both helium and nitrogen are present. Refer to separate write-up */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1605 /* for a more detailed explanation of this algorithm. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1606 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1607
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1608 int calc_surface_phase_volume_time()
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1609 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1610 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1611 float decay_time_to_zero_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1612 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1613 float integral_gradient_x_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1614 surface_inspired_n2_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1615
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1616 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1617 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1618 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1619 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1620
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1621 surface_inspired_n2_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1622 (barometric_pressure - WATER_VAPOR_PRESSURE) * 0.79f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1623 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1624 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1625 if (nitrogen_pressure[i - 1] > surface_inspired_n2_pressure)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1626 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1627 surface_phase_volume_time[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1628 (helium_pressure[i - 1] / HELIUM_TIME_CONSTANT[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1629 (nitrogen_pressure[i - 1] - surface_inspired_n2_pressure) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1630 NITROGEN_TIME_CONSTANT[i - 1]) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1631 (helium_pressure[i - 1] + nitrogen_pressure[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1632 surface_inspired_n2_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1633 } else if (nitrogen_pressure[i - 1] <= surface_inspired_n2_pressure &&
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1634 helium_pressure[i - 1] + nitrogen_pressure[i - 1] >= surface_inspired_n2_pressure)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1635 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1636 decay_time_to_zero_gradient =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1637 1.0f / (NITROGEN_TIME_CONSTANT[i - 1] - HELIUM_TIME_CONSTANT[i - 1]) *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1638 log((surface_inspired_n2_pressure - nitrogen_pressure[i - 1]) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1639 helium_pressure[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1640 integral_gradient_x_time =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1641 helium_pressure[i - 1] /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1642 HELIUM_TIME_CONSTANT[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1643 (1.0f - expf(-HELIUM_TIME_CONSTANT[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1644 decay_time_to_zero_gradient)) +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1645 (nitrogen_pressure[i - 1] - surface_inspired_n2_pressure) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1646 NITROGEN_TIME_CONSTANT[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1647 (1.0f - expf(-NITROGEN_TIME_CONSTANT[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1648 decay_time_to_zero_gradient));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1649 surface_phase_volume_time[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1650 integral_gradient_x_time /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1651 (helium_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1652 nitrogen_pressure[i - 1] -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1653 surface_inspired_n2_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1654 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1655 surface_phase_volume_time[i - 1] = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1656 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1657 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1658 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1659 } /* calc_surface_phase_volume_time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1660
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1661 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1662 /* SUBROUTINE CRITICAL_VOLUME */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1663 /* Purpose: This subprogram applies the VPM Critical Volume Algorithm. This */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1664 /* algorithm will compute "relaxed" gradients for helium and nitrogen based */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1665 /* on the setting of the Critical Volume Parameter Lambda. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1666 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1667
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1668 int critical_volume(float *deco_phase_volume_time)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1669 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1670 /* System generated locals */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1671 float r1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1672
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1673 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1674 float initial_allowable_grad_n2_pa,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1675 initial_allowable_grad_he_pa,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1676 parameter_lambda_pascals, b,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1677 c;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1678 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1679 float new_allowable_grad_n2_pascals,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1680 phase_volume_time[16],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1681 new_allowable_grad_he_pascals,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1682 adj_crush_pressure_n2_pascals,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1683 adj_crush_pressure_he_pascals;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1684
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1685 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1686 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1687 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1688 /* Note: Since the Critical Volume Parameter Lambda was defined in units of */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1689 /* fsw-min in the original papers by Yount and colleauges, the same */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1690 /* convention is retained here. Although Lambda is adjustable only in units */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1691 /* of fsw-min in the program settings (range from 6500 to 8300 with default */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1692 /* 7500), it will convert to the proper value in Pascals-min in this */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1693 /* subroutine regardless of which diving pressure units are being used in */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1694 /* the main program - feet of seawater (fsw) or meters of seawater (msw). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1695 /* The allowable gradient is computed using the quadratic formula (refer to */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1696 /* separate write-up posted on the Deco List web site). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1697 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1698
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1699 /**
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1700 ******************************************************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1701 * @brief critical_volume comment by hw
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1702 * @version V0.0.1
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1703 * @date 19-April-2014
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1704 * @retval global: allowable_gradient_he[i], allowable_gradient_n2[i]
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1705 ******************************************************************************
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1706 */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1707
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1708 parameter_lambda_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1709 CRIT_VOLUME_PARAMETER_LAMBDA / 33.0f * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1710 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1711 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1712 phase_volume_time[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1713 *deco_phase_volume_time + surface_phase_volume_time[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1714 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1715 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1716 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1717
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1718 adj_crush_pressure_he_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1719 pVpm->adjusted_crushing_pressure_he[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1720
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1721 initial_allowable_grad_he_pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1722 pVpm->initial_allowable_gradient_he[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1723
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1724 b = initial_allowable_grad_he_pa + parameter_lambda_pascals *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1725 SURFACE_TENSION_GAMMA / (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1726 SKIN_COMPRESSION_GAMMAC * phase_volume_time[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1727
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1728 c = SURFACE_TENSION_GAMMA * (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1729 SURFACE_TENSION_GAMMA * (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1730 parameter_lambda_pascals * adj_crush_pressure_he_pascals)) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1731 (SKIN_COMPRESSION_GAMMAC *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1732 (SKIN_COMPRESSION_GAMMAC * phase_volume_time[i - 1]));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1733 /* Computing 2nd power */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1734
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1735 r1 = b;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1736
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1737 new_allowable_grad_he_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1738 (b + sqrtf(r1 * r1 - c * 4.0f)) / 2.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1739
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1740 /* modify global variable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1741 allowable_gradient_he[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1742 new_allowable_grad_he_pascals / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1743 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1744
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1745 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1746 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1747 adj_crush_pressure_n2_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1748 pVpm->adjusted_crushing_pressure_n2[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1749
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1750 initial_allowable_grad_n2_pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1751 pVpm->initial_allowable_gradient_n2[i - 1] / UNITS_FACTOR * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1752
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1753 b = initial_allowable_grad_n2_pa + parameter_lambda_pascals *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1754 SURFACE_TENSION_GAMMA / (
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1755 SKIN_COMPRESSION_GAMMAC * phase_volume_time[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1756
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1757 c = SURFACE_TENSION_GAMMA *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1758 (SURFACE_TENSION_GAMMA *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1759 (parameter_lambda_pascals * adj_crush_pressure_n2_pascals)) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1760 (SKIN_COMPRESSION_GAMMAC *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1761 (SKIN_COMPRESSION_GAMMAC * phase_volume_time[i - 1]));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1762 /* Computing 2nd power */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1763
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1764 r1 = b;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1765
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1766 new_allowable_grad_n2_pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1767 (b + sqrtf(r1 * r1 - c * 4.0f)) / 2.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1768
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1769 /* modify global variable */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1770 allowable_gradient_n2[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1771 new_allowable_grad_n2_pascals / 101325.0f * UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1772 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1773 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1774 } /* critical_volume */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1775
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1776 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1777 /* SUBROUTINE CALC_START_OF_DECO_ZONE */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1778 /* Purpose: This subroutine uses the Bisection Method to find the depth at */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1779 /* which the leading compartment just enters the decompression zone. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1780 /* Source: "Numerical Recipes in Fortran 77", Cambridge University Press, */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1781 /* 1992. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1782 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1783
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1784 int calc_start_of_deco_zone(float *starting_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1785 float *rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1786 float *depth_start_of_deco_zone)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1787 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1788 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1789 float last_diff_change,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1790 initial_helium_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1791 mid_range_nitrogen_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1792 short i, j;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1793 float initial_inspired_n2_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1794 cpt_depth_start_of_deco_zone,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1795 low_bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1796 initial_inspired_he_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1797 high_bound_nitrogen_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1798 nitrogen_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1799 function_at_mid_range,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1800 function_at_low_bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1801 high_bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1802 mid_range_helium_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1803 mid_range_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1804 starting_ambient_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1805 initial_nitrogen_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1806 function_at_high_bound;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1807
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1808 float time_to_start_of_deco_zone,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1809 high_bound_helium_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1810 helium_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1811 differential_change;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1812 float fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1813 float fraction_helium_end;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1814 float fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1815 float fraction_nitrogen_end;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1816 float ending_ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1817 float time_test;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1818
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1819
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1820 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1821 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1822 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1823 /* First initialize some variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1824 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1825
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1826 *depth_start_of_deco_zone = 0.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1827 starting_ambient_pressure = *starting_depth + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1828
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1829 //>>>>>>>>>>>>>>>>>>>>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1830 //Test depth to calculate helium_rate and nitrogen_rate
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1831 ending_ambient_pressure = starting_ambient_pressure/2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1832
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1833 time_test = (ending_ambient_pressure - starting_ambient_pressure) / *rate;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1834 decom_get_inert_gases(starting_ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]), &fraction_nitrogen_begin, &fraction_helium_begin );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1835 decom_get_inert_gases(ending_ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]), &fraction_nitrogen_end, &fraction_helium_end );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1836 initial_inspired_he_pressure = (starting_ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1837 initial_inspired_n2_pressure = (starting_ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1838 helium_rate = ((ending_ambient_pressure - WATER_VAPOR_PRESSURE)* fraction_helium_end - initial_inspired_he_pressure)/time_test;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1839 nitrogen_rate = ((ending_ambient_pressure - WATER_VAPOR_PRESSURE)* fraction_nitrogen_end - initial_inspired_n2_pressure)/time_test;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1840 //>>>>>>>>>>>>>>>>>>>>>
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1841 /*initial_inspired_he_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1842 (starting_ambient_pressure - water_vapor_pressure) *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1843 fraction_helium[mix_number - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1844 initial_inspired_n2_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1845 (starting_ambient_pressure - water_vapor_pressure) *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1846 fraction_nitrogen[mix_number - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1847 helium_rate = *rate * fraction_helium[mix_number - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1848 nitrogen_rate = *rate * fraction_nitrogen[mix_number - 1];*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1849
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1850 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1851 /* ESTABLISH THE BOUNDS FOR THE ROOT SEARCH USING THE BISECTION METHOD */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1852 /* AND CHECK TO MAKE SURE THAT THE ROOT WILL BE WITHIN BOUNDS. PROCESS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1853 /* EACH COMPARTMENT INDIVIDUALLY AND FIND THE MAXIMUM DEPTH ACROSS ALL */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1854 /* COMPARTMENTS (LEADING COMPARTMENT) */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1855 /* In this case, we are solving for time - the time when the gas tension in */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1856 /* the compartment will be equal to ambient pressure. The low bound for time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1857 /* is set at zero and the high bound is set at the time it would take to */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1858 /* ascend to zero ambient pressure (absolute). Since the ascent rate is */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1859 /* negative, a multiplier of -1.0 is used to make the time positive. The */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1860 /* desired point when gas tension equals ambient pressure is found at a time */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1861 /* somewhere between these endpoints. The algorithm checks to make sure that */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1862 /* the solution lies in between these bounds by first computing the low bound */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1863 /* and high bound function values. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1864 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1865
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1866 low_bound = 0.;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1867 high_bound = starting_ambient_pressure / *rate * -1.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1868 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1869 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1870 initial_helium_pressure = helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1871 initial_nitrogen_pressure = nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1872 function_at_low_bound =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1873 initial_helium_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1874 initial_nitrogen_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1875 CONSTANT_PRESSURE_OTHER_GASES -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1876 starting_ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1877 high_bound_helium_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1878 schreiner_equation__2(&initial_inspired_he_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1879 &helium_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1880 &high_bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1881 &HELIUM_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1882 &initial_helium_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1883 high_bound_nitrogen_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1884 schreiner_equation__2(&initial_inspired_n2_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1885 &nitrogen_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1886 &high_bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1887 &NITROGEN_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1888 &initial_nitrogen_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1889 function_at_high_bound = high_bound_helium_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1890 high_bound_nitrogen_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1891 CONSTANT_PRESSURE_OTHER_GASES;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1892 if (function_at_high_bound * function_at_low_bound >= 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1893 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1894 printf("\nERROR! ROOT IS NOT WITHIN BRACKETS");
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1895 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1896
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1897 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1898 /* APPLY THE BISECTION METHOD IN SEVERAL ITERATIONS UNTIL A SOLUTION WITH */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1899 /* THE DESIRED ACCURACY IS FOUND */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1900 /* Note: the program allows for up to 100 iterations. Normally an exit will */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1901 /* be made from the loop well before that number. If, for some reason, the */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1902 /* program exceeds 100 iterations, there will be a pause to alert the user. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1903 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1904
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1905 if (function_at_low_bound < 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1906 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1907 time_to_start_of_deco_zone = low_bound;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1908 differential_change = high_bound - low_bound;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1909 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1910 time_to_start_of_deco_zone = high_bound;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1911 differential_change = low_bound - high_bound;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1912 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1913 for (j = 1; j <= 100; ++j)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1914 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1915 last_diff_change = differential_change;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1916 differential_change = last_diff_change * 0.5f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1917 mid_range_time =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1918 time_to_start_of_deco_zone +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1919 differential_change;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1920 mid_range_helium_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1921 schreiner_equation__2(&initial_inspired_he_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1922 &helium_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1923 &mid_range_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1924 &HELIUM_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1925 &initial_helium_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1926 mid_range_nitrogen_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1927 schreiner_equation__2(&initial_inspired_n2_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1928 &nitrogen_rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1929 &mid_range_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1930 &NITROGEN_TIME_CONSTANT[i - 1],
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1931 &initial_nitrogen_pressure);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1932 function_at_mid_range =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1933 mid_range_helium_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1934 mid_range_nitrogen_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1935 CONSTANT_PRESSURE_OTHER_GASES -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1936 (starting_ambient_pressure + *rate * mid_range_time);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1937 if (function_at_mid_range <= 0.0f) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1938 time_to_start_of_deco_zone = mid_range_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1939 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1940 if( fabs(differential_change) < 0.001f
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1941 || function_at_mid_range == 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1942 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1943 goto L170;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1944 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1945 /* L150: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1946 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1947 printf("\nERROR! ROOT SEARCH EXCEEDED MAXIMUM ITERATIONS");
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1948 //pause();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1949
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1950 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1951 /* When a solution with the desired accuracy is found, the program jumps out */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1952 /* of the loop to Line 170 and assigns the solution value for the individual */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1953 /* compartment. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1954 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1955
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1956 L170:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1957 cpt_depth_start_of_deco_zone =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1958 starting_ambient_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1959 *rate * time_to_start_of_deco_zone -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1960 barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1961
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1962 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1963 /* The overall solution will be the compartment with the maximum depth where */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1964 /* gas tension equals ambient pressure (leading compartment). */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1965 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1966
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1967 *depth_start_of_deco_zone =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1968 fmaxf(*depth_start_of_deco_zone, cpt_depth_start_of_deco_zone);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1969 /* L200: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1970 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1971 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1972 } /* calc_start_of_deco_zone */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1973
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1974 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1975 /* SUBROUTINE PROJECTED_ASCENT */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1976 /* Purpose: This subprogram performs a simulated ascent outside of the main */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1977 /* program to ensure that a deco ceiling will not be violated due to unusual */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1978 /* gas loading during ascent (on-gassing). If the deco ceiling is violated, */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1979 /* the stop depth will be adjusted deeper by the step size until a safe */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1980 /* ascent can be made. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1981 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1982
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1983 int projected_ascent(float *starting_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1984 float *rate,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1985 float *deco_stop_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1986 float *step_size)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1987 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1988 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1989 float weighted_allowable_gradient,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1990 ending_ambient_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1991 temp_gas_loading[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1992 int i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1993 float allowable_gas_loading[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1994 float temp_nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1995 float temp_helium_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1996 float run_time_save = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1997
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1998 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
1999 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2000 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2001 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2002
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2003
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2004 L665:
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2005 ending_ambient_pressure = *deco_stop_depth + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2006 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2007 temp_helium_pressure[i - 1] = helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2008 temp_nitrogen_pressure[i - 1] = nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2009 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2010 run_time_save = run_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2011 gas_loadings_ascent_descen(temp_helium_pressure, temp_nitrogen_pressure, *starting_depth,*deco_stop_depth,*rate,true);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2012 run_time = run_time_save;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2013
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2014 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2015 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2016 temp_gas_loading[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2017 temp_helium_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2018 temp_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2019 if (temp_gas_loading[i - 1] > 0.0f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2020 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2021 weighted_allowable_gradient =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2022 (allowable_gradient_he[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2023 temp_helium_pressure[i - 1] +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2024 allowable_gradient_n2[i - 1] *
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2025 temp_nitrogen_pressure[i - 1]) / temp_gas_loading[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2026 } else {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2027 /* Computing MIN */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2028 weighted_allowable_gradient = fminf(allowable_gradient_he[i - 1],allowable_gradient_n2[i - 1]);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2029 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2030 allowable_gas_loading[i - 1] =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2031 ending_ambient_pressure +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2032 weighted_allowable_gradient -
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2033 CONSTANT_PRESSURE_OTHER_GASES;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2034 /* L670: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2035 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2036 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2037 if (temp_gas_loading[i - 1] > allowable_gas_loading[i - 1]) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2038 *deco_stop_depth += *step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2039 goto L665;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2040 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2041 /* L671: */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2042 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2043 return 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2044 } /* projected_ascent */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2045
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2046 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2047 /* SUBROUTINE DECOMPRESSION_STOP */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2048 /* Purpose: This subprogram calculates the required time at each */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2049 /* decompression stop. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2050 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2051
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2052 void decompression_stop(float *deco_stop_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2053 float *step_size,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2054 _Bool final_deco_calculation)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2055 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2056 /* Local variables */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2057 float inspired_nitrogen_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2058 // short last_segment_number;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2059 // float weighted_allowable_gradient;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2060 float initial_helium_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2061 /* by hw */
51
8f8ea3a32e82 Resolved warnings pointing to possible invalid memory access
Ideenmodellierer
parents: 38
diff changeset
2062 float initial_CNS = gCNS_VPM;
38
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2063
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2064 //static float time_counter;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2065 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2066 float ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2067 float inspired_helium_pressure,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2068 next_stop;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2069 //last_run_time,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2070 //temp_segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2071
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2072 float deco_ceiling_depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2073 initial_nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2074 //round_up_operation;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2075 float fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2076 float fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2077 int count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2078 _Bool buehlmann_wait = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2079 float tissue_He_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2080 float tissue_N2_saturation[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2081 float vpm_buehlmann_safety_gradient = 1.0f - (((float)pDiveSettings->vpm_conservatism) / 40);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2082 /* loop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2083 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2084 /* CALCULATIONS */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2085 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2086
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2087 segment_time = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2088 // temp_segment_time = segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2089 ambient_pressure = *deco_stop_depth + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2090 //ending_ambient_pressure = ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2091 decom_get_inert_gases(ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]), &fraction_nitrogen_begin, &fraction_helium_begin );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2092
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2093 if(*deco_stop_depth == (float)(pDiveSettings->last_stop_depth_bar * 10))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2094 next_stop = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2095 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2096 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2097 next_stop = *deco_stop_depth - *step_size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2098 next_stop = fmaxf(next_stop,(float)pDiveSettings->last_stop_depth_bar * 10);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2099 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2100
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2101 inspired_helium_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2102 (ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2103 inspired_nitrogen_pressure =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2104 (ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2105
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2106 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2107 /* Check to make sure that program won't lock up if unable to decompress */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2108 /* to the next stop. If so, write error message and terminate program. */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2109 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2110
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2111 //deco_ceiling_depth = next_stop +1; //deco_ceiling_depth = next_stop + 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2112 if(!vpm_violates_buehlmann)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2113 calc_deco_ceiling(&deco_ceiling_depth, false); //weg, weil auf jeden Fall schleife für safety und so konservativer
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2114 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2115 deco_ceiling_depth = next_stop + 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2116
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2117 if(deco_ceiling_depth > next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2118 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2119 while (deco_ceiling_depth > next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2120 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2121
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2122 segment_time += 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2123 if(segment_time >= 999 )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2124 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2125 segment_time = 999 ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2126 run_time += segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2127 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2128 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2129 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2130 initial_CNS = gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2131 decom_oxygen_calculate_cns_exposure(60*60,&pDiveSettings->decogaslist[mix_number],ambient_pressure/10,&gCNS_VPM);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2132 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2133 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2134 initial_helium_pressure[i] = helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2135 initial_nitrogen_pressure[i] = nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2136 helium_pressure[i] += (inspired_helium_pressure - helium_pressure[i]) * float_buehlmann_He_factor_expositon_one_hour[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2137 nitrogen_pressure[i] += (inspired_nitrogen_pressure - nitrogen_pressure[i]) * float_buehlmann_N2_factor_expositon_one_hour[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2138 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2139 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2140 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2141 if(deco_ceiling_depth < next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2142 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2143 segment_time -= 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2144 gCNS_VPM = initial_CNS;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2145 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2146 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2147 helium_pressure[i] = initial_helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2148 nitrogen_pressure[i] = initial_nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2149 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2150 deco_ceiling_depth = next_stop +1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2151 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2152 count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2153 while (deco_ceiling_depth > next_stop && count < 13)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2154 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2155 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2156 segment_time += 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2157 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2158 initial_CNS = gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2159 decom_oxygen_calculate_cns_exposure(60*5,&pDiveSettings->decogaslist[mix_number],ambient_pressure/10,&gCNS_VPM);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2160 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2161 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2162 initial_helium_pressure[i] = helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2163 initial_nitrogen_pressure[i] = nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2164 helium_pressure[i] += (inspired_helium_pressure - helium_pressure[i]) * float_buehlmann_He_factor_expositon_five_minutes[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2165 nitrogen_pressure[i] += (inspired_nitrogen_pressure - nitrogen_pressure[i]) * float_buehlmann_N2_factor_expositon_five_minutes[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2166 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2167 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2168 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2169 if(deco_ceiling_depth < next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2170 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2171 segment_time -= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2172 gCNS_VPM = initial_CNS;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2173 for (i = 0; i < 16; i++) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2174 helium_pressure[i] = initial_helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2175 nitrogen_pressure[i] = initial_nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2176 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2177 deco_ceiling_depth = next_stop +1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2178 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2179 buehlmann_wait = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2180 while (buehlmann_wait || (deco_ceiling_depth > next_stop))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2181 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2182 //time_counter = temp_segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2183 segment_time += 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2184
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2185 if(segment_time >= 999 )
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2186 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2187 segment_time = 999 ;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2188 run_time += segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2189 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2190 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2191 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2192 initial_CNS = gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2193 decom_oxygen_calculate_cns_exposure(60*1,&pDiveSettings->decogaslist[mix_number],ambient_pressure/10,&gCNS_VPM);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2194 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2195 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2196 initial_helium_pressure[i] = helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2197 initial_nitrogen_pressure[i] = nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2198 helium_pressure[i] += (inspired_helium_pressure - helium_pressure[i]) * float_buehlmann_He_factor_expositon_one_minute[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2199 nitrogen_pressure[i] += (inspired_nitrogen_pressure - nitrogen_pressure[i]) * float_buehlmann_N2_factor_expositon_one_minute[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2200 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2201 if(!buehlmann_wait)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2202 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2203
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2204 if(buehlmannSafety && final_deco_calculation && !(deco_ceiling_depth > next_stop))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2205 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2206 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2207 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2208 tissue_He_saturation[i] = helium_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2209 tissue_N2_saturation[i] = nitrogen_pressure[i] / 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2210 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2211 if( (fabsf(nitrogen_pressure[15] - inspired_nitrogen_pressure) < 0.00001f) && (fabsf(helium_pressure[15] - inspired_helium_pressure) < 0.00001f)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2212 && (fabsf(nitrogen_pressure[0] - inspired_nitrogen_pressure) < 0.00001f) && (fabsf(helium_pressure[0] - inspired_helium_pressure) < 0.00001f))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2213 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2214 buehlmann_wait_exceeded = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2215 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2216 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2217
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2218 if(decom_tissue_test_tolerance(tissue_N2_saturation, tissue_He_saturation, vpm_buehlmann_safety_gradient, (next_stop / 10.0f) + pInput->pressure_surface_bar))
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2219 break;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2220
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2221 buehlmann_wait = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2222 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2223 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2224 if(buehlmann_wait)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2225 vpm_violates_buehlmann = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2226
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2227 if(!buehlmann_wait)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2228 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2229 if(deco_ceiling_depth < next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2230 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2231 segment_time -= 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2232 gCNS_VPM = initial_CNS;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2233 for (i = 0; i < 16; i++) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2234 helium_pressure[i] = initial_helium_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2235 nitrogen_pressure[i] = initial_nitrogen_pressure[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2236 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2237 deco_ceiling_depth = next_stop +1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2238 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2239 while (deco_ceiling_depth > next_stop)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2240 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2241 //time_counter = temp_segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2242 segment_time += (float) 1.0f / 3.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2243 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2244 initial_CNS = gCNS_VPM;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2245 decom_oxygen_calculate_cns_exposure(20,&pDiveSettings->decogaslist[mix_number],ambient_pressure/10,&gCNS_VPM);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2246 for (i = 0; i < 16; i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2247 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2248 helium_pressure[i] += (inspired_helium_pressure - helium_pressure[i]) * float_buehlmann_He_factor_expositon_20_seconds[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2249 nitrogen_pressure[i] += (inspired_nitrogen_pressure - nitrogen_pressure[i]) * float_buehlmann_N2_factor_expositon_20_seconds[i];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2250 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2251 calc_deco_ceiling(&deco_ceiling_depth, false);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2252 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2253 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2254 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2255
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2256 /*float pressure_save =dive_data.pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2257 dive_data.pressure = ambient_pressure/10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2258 tissues_exposure_stage(st_deco_test,(int)(segment_time * 60), &dive_data, &gaslist);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2259 dive_data.pressure = pressure_save;*/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2260 run_time += segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2261 return;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2262 } /* decompression_stop */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2263
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2264 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2265 // SUROUTINE BOYLES_LAW_COMPENSATION
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2266 // Purpose: This subprogram calculates the reduction in allowable gradients
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2267 // with decreasing ambient pressure during the decompression profile based
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2268 // on Boyle's Law considerations.
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2269 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2270 void BOYLES_LAW_COMPENSATION (float* First_Stop_Depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2271 float* Deco_Stop_Depth,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2272 float* Step_Size)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2273 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2274 short i;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2275
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2276 float Next_Stop;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2277 float Ambient_Pressure_First_Stop, Ambient_Pressure_Next_Stop;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2278 float Amb_Press_First_Stop_Pascals, Amb_Press_Next_Stop_Pascals;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2279 float A, B, C, Low_Bound, High_Bound, Ending_Radius;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2280 float Deco_Gradient_Pascals;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2281 float Allow_Grad_First_Stop_He_Pa, Radius_First_Stop_He;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2282 float Allow_Grad_First_Stop_N2_Pa, Radius_First_Stop_N2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2283
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2284 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2285 // LO//AL ARRAYS
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2286 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2287 // float Radius1_He[16], Radius2_He[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2288 // float Radius1_N2[16], Radius2_N2[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2289 float root_factor;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2290
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2291 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2292 // CALCULATIONS
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2293 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2294 Next_Stop = *Deco_Stop_Depth - *Step_Size;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2295
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2296 Ambient_Pressure_First_Stop = *First_Stop_Depth +
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2297 barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2298
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2299 Ambient_Pressure_Next_Stop = Next_Stop + barometric_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2300
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2301 Amb_Press_First_Stop_Pascals = (Ambient_Pressure_First_Stop/UNITS_FACTOR) * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2302
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2303 Amb_Press_Next_Stop_Pascals =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2304 (Ambient_Pressure_Next_Stop/UNITS_FACTOR) * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2305 root_factor = powf(Amb_Press_First_Stop_Pascals/Amb_Press_Next_Stop_Pascals,1.0f / 3.0f);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2306
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2307 for( i = 0; i < 16;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2308 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2309 Allow_Grad_First_Stop_He_Pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2310 (allowable_gradient_he[i]/UNITS_FACTOR) * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2311
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2312 Radius_First_Stop_He = (2.0f * SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2313 Allow_Grad_First_Stop_He_Pa;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2314
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2315 // Radius1_He[i] = Radius_First_Stop_He;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2316 A = Amb_Press_Next_Stop_Pascals;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2317 B = -2.0f * SURFACE_TENSION_GAMMA;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2318 C = (Amb_Press_First_Stop_Pascals + (2.0f * SURFACE_TENSION_GAMMA)/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2319 Radius_First_Stop_He)* Radius_First_Stop_He*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2320 (Radius_First_Stop_He*(Radius_First_Stop_He));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2321 Low_Bound = Radius_First_Stop_He;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2322 High_Bound = Radius_First_Stop_He * root_factor;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2323 //*pow(Amb_Press_First_Stop_Pascals/Amb_Press_Next_Stop_Pascals,1.0/3.0);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2324 //*(Amb_Press_First_Stop_Pascals/Amb_Press_Next_Stop_Pascals)**(1.0/3.0);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2325
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2326 radius_root_finder(&A,&B,&C, &Low_Bound, &High_Bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2327 &Ending_Radius);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2328
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2329 // Radius2_He[i] = Ending_Radius;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2330 Deco_Gradient_Pascals = (2.0f * SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2331 Ending_Radius;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2332
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2333 deco_gradient_he[i] = (Deco_Gradient_Pascals / 101325.0f)*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2334 UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2335
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2336 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2337
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2338 for( i = 0; i < 16;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2339 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2340 Allow_Grad_First_Stop_N2_Pa =
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2341 (allowable_gradient_n2[i]/UNITS_FACTOR) * 101325.0f;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2342
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2343 Radius_First_Stop_N2 = (2.0f * SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2344 Allow_Grad_First_Stop_N2_Pa;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2345
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2346 // Radius1_N2[i] = Radius_First_Stop_N2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2347 A = Amb_Press_Next_Stop_Pascals;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2348 B = -2.0f * SURFACE_TENSION_GAMMA;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2349 C = (Amb_Press_First_Stop_Pascals + (2.0f * SURFACE_TENSION_GAMMA)/
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2350 Radius_First_Stop_N2)* Radius_First_Stop_N2*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2351 (Radius_First_Stop_N2*(Radius_First_Stop_N2));
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2352 Low_Bound = Radius_First_Stop_N2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2353 High_Bound = Radius_First_Stop_N2* root_factor;//pow(Amb_Press_First_Stop_Pascals/Amb_Press_Next_Stop_Pascals,1.0/3.0);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2354
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2355 //High_Bound = Radius_First_Stop_N2*exp(log(Amb_Press_First_Stop_Pascals/Amb_Press_Next_Stop_Pascals)/3);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2356 radius_root_finder(&A,&B,&C, &Low_Bound, &High_Bound,
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2357 &Ending_Radius);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2358
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2359 // Radius2_N2[i] = Ending_Radius;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2360 Deco_Gradient_Pascals = (2.0f * SURFACE_TENSION_GAMMA) /
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2361 Ending_Radius;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2362
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2363 deco_gradient_n2[i] = (Deco_Gradient_Pascals / 101325.0f)*
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2364 UNITS_FACTOR;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2365 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2366 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2367
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2368 /* =============================================================================== */
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2369 // vpm_calc_nullzeit
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2370 // Purpose: This function calcs zero time (time where no decostops are needed)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2371 //===============================================================================
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2372 int vpm_calc_nullzeit(void)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2373 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2374 static float future_helium_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2375 static float future_nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2376 static int temp_segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2377 static int mix_number;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2378 static float inspired_helium_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2379 static float inspired_nitrogen_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2380
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2381 float previous_helium_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2382 float previous_nitrogen_pressure[16];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2383 float ambient_pressure;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2384 float fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2385 float fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2386 int i = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2387 int count = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2388 int status = CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2389 //if(begin)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2390 //{
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2391 for(i = 0; i < 16;i++)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2392 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2393 future_helium_pressure[i] = pInput->tissue_helium_bar[i] * 10;//tissue_He_saturation[st_dive][i] * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2394 future_nitrogen_pressure[i] = pInput->tissue_nitrogen_bar[i] * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2395 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2396 temp_segment_time = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2397
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2398 mix_number = 0;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2399 ambient_pressure = pInput->pressure_ambient_bar * 10;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2400 // fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2401 // fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2402 decom_get_inert_gases( ambient_pressure / 10, (&pDiveSettings->decogaslist[mix_number]) , &fraction_nitrogen_begin, &fraction_helium_begin );
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2403 inspired_helium_pressure =(ambient_pressure - WATER_VAPOR_PRESSURE) * fraction_helium_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2404 inspired_nitrogen_pressure =(ambient_pressure - WATER_VAPOR_PRESSURE) *fraction_nitrogen_begin;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2405
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2406 //if(!nullzeit_unter60)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2407 //{
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2408 status = CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2409 while (status == CALC_END)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2410 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2411 count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2412 //if(count == 7)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2413 //return CALC_NULLZEIT2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2414 temp_segment_time += 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2415 if(temp_segment_time >= 300)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2416 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2417 pDecoInfo->output_ndl_seconds = temp_segment_time * 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2418 return CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2419 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2420 run_time += 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2421 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2422 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2423 previous_helium_pressure[i-1] = future_helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2424 previous_nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2425 future_helium_pressure[i - 1] = future_helium_pressure[i - 1] + (inspired_helium_pressure - future_helium_pressure[i - 1]) * float_buehlmann_He_factor_expositon_one_hour[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2426 future_nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1] + (inspired_nitrogen_pressure - future_nitrogen_pressure[i - 1]) * float_buehlmann_N2_factor_expositon_one_hour[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2427 helium_pressure[i - 1] = future_helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2428 nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2429 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2430 vpm_calc_deco();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2431 while((status = vpm_calc_critcal_volume(true,true)) == CALC_CRITICAL);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2432
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2433 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2434
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2435 temp_segment_time -= 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2436 run_time -= 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2437 for (i = 1; i <= 16; ++i)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2438 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2439 future_helium_pressure[i - 1] = previous_helium_pressure[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2440 future_nitrogen_pressure[i - 1] = previous_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2441 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2442 //}
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2443 //}
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2444 //if(!nullzeit_unter60 || begin || temp_segment_time > 10)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2445 //{
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2446
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2447 status = CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2448 if(temp_segment_time < 60)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2449 nullzeit_unter60 = true;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2450
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2451 while (status == CALC_END)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2452 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2453 // count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2454 //if(count >= 5)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2455 //return CALC_NULLZEIT2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2456 temp_segment_time += 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2457 if(temp_segment_time >= 300)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2458 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2459 pDecoInfo->output_ndl_seconds = temp_segment_time * 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2460 return CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2461 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2462 if(nullzeit_unter60 && temp_segment_time > 60)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2463 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2464 nullzeit_unter60 = false;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2465 //tts[NULLZEIT] = temp_segment_time * 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2466 return CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2467 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2468 run_time += 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2469 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2470 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2471 previous_helium_pressure[i-1] = future_helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2472 previous_nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2473 future_helium_pressure[i - 1] = future_helium_pressure[i - 1] + (inspired_helium_pressure - future_helium_pressure[i - 1]) * float_buehlmann_He_factor_expositon_five_minutes[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2474 future_nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1] + (inspired_nitrogen_pressure - future_nitrogen_pressure[i - 1]) * float_buehlmann_N2_factor_expositon_five_minutes[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2475 helium_pressure[i - 1] = future_helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2476 nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2477 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2478 vpm_calc_deco();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2479 while((status =vpm_calc_critcal_volume(true,true)) == CALC_CRITICAL);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2480 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2481 temp_segment_time -= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2482 run_time -= 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2483 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2484 future_helium_pressure[i - 1] = previous_helium_pressure[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2485 future_nitrogen_pressure[i - 1] = previous_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2486 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2487 status = CALC_END;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2488 //if(temp_segment_time < 5)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2489 //count = 2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2490 //}
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2491 //else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2492 //count = 1;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2493 if(temp_segment_time <= 20)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2494 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2495 while (status == CALC_END)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2496 {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2497 //time_counter = temp_segment_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2498 //count++;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2499 //if(count > 2)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2500 //return CALC_NULLZEIT2;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2501 temp_segment_time += minimum_deco_stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2502 run_time += minimum_deco_stop_time;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2503 //goto L700;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2504 for (i = 1; i <= 16; ++i) {
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2505 future_helium_pressure[i - 1] = future_helium_pressure[i - 1] + (inspired_helium_pressure - future_helium_pressure[i - 1]) * float_buehlmann_He_factor_expositon_one_minute[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2506 future_nitrogen_pressure[i - 1] = future_nitrogen_pressure[i - 1] + (inspired_nitrogen_pressure - future_nitrogen_pressure[i - 1]) * float_buehlmann_N2_factor_expositon_one_minute[i-1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2507 helium_pressure[i - 1] = future_helium_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2508 nitrogen_pressure[i - 1] =future_nitrogen_pressure[i - 1];
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2509
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2510 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2511 vpm_calc_deco();
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2512 while((status =vpm_calc_critcal_volume(true,true)) == CALC_CRITICAL);
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2513
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2514 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2515 }
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2516 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2517 temp_segment_time += 5;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2518 pDecoInfo->output_ndl_seconds = temp_segment_time * 60;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2519 if(temp_segment_time > 1)
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2520 return CALC_NULLZEIT;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2521 else
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2522 return CALC_BEGIN;
5f11787b4f42 include in ostc4 repository
heinrichsweikamp
parents:
diff changeset
2523 }