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view Discovery/Inc/vpm.h @ 855:012f94ec2fe0 Evo_2_23

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Redefine Deco gas creation function: The old function needed a lot of iteration to get through all gases. With the change to define the first gas in PSCR mode as deco gas for calculation (because the actual gas could be not breathable close to surface => deco planing would be based on > 80% nitrogen increasing the deco prediction higher than necessary) the need showed up to somehow define the first gas as deco gas. Instead of manipulating the gas attribute the deco list creation function was changed to create the list based on gas line pointer information instead of index lists. The new function needs less iterations for sorting and is more flexible regarding gas handling.
author Ideenmodellierer
date Mon, 18 Mar 2024 21:52:25 +0100 (13 months ago)
parents bfcea6e2ab3f
children d4622533271d
line wrap: on
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///////////////////////////////////////////////////////////////////////////////
/// -*- coding: UTF-8 -*-
///
/// \file   Discovery/Inc/vpm.h
/// \brief  Varying Permeability Model (VPM) Decompression Program
/// \author Heinrichs Weikamp
/// \date   23.04.2013
///
/// $Id$
///////////////////////////////////////////////////////////////////////////////
/// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
///
///     This program is free software: you can redistribute it and/or modify
///     it under the terms of the GNU General Public License as published by
///     the Free Software Foundation, either version 3 of the License, or
///     (at your option) any later version.
///
///     This program is distributed in the hope that it will be useful,
///     but WITHOUT ANY WARRANTY; without even the implied warranty of
///     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
///     GNU General Public License for more details.
///
///     You should have received a copy of the GNU General Public License
///     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//////////////////////////////////////////////////////////////////////////////

#ifndef VPM_H
#define VPM_H

#include "buehlmann.h"
#include "data_central.h"

extern long vpm_time_calc_begin;
enum DECOLIST{DECOSTOPS,FUTURESTOPS,BAILOUTSTOPS, OFF = -1}; // order is important!!
enum VPM_CALC_STATUS{CALC_END, CALC_BEGIN, CALC_CRITICAL, CALC_FINAL_DECO, CALC_NDL };

float schreiner_equation__2(float *initial_inspired_gas_pressure,float *rate_change_insp_gas_pressure,float *interval_time_minutes,  const float *gas_time_constant,float *initial_gas_pressure);

int  vpm_calc(SLifeData* pINPUT, SDiveSettings* diveSettings, SVpm* pVPM, SDecoinfo*  pDECOINFO, int calc_what);
void  vpm_saturation_after_ascent(SLifeData* input);
extern  const float helium_time_constant[16];
extern  const float nitrogen_time_constant[16];

float vpm_get_CNS(void);


#endif /* VPM_H */