mifr/subsurface
1
0
Fork 0
mirror of https://github.com/subsurface/subsurface.git synced 2025-02-19 22:16:15 +00:00
Code Issues Projects Releases Packages Wiki Activity

Cleanup: move gas-functions to own translation unit

Browse source 
But only functions that operate only on gases. Functions concerning
cylinders or dives remain in dive.c or are moved to equipment.c

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-06-04 13:52:48 +02:00 • committed by Dirk Hohndel
parent 8352274758
commit 619d3fb1fd
8 changed files with 174 additions and 149 deletions
Download patch file Download diff file Expand all files Collapse all files

57
core/gas.h Normal file
View file

@ -0,0 +1,57 @@
// SPDX-License-Identifier: GPL-2.0
#ifndef GAS_H
#define GAS_H
#include "units.h"
#ifdef __cplusplus
extern "C" {
#else
#include <stdbool.h>
#endif
// o2 == 0 && he == 0 -> air
// o2 < 0 -> invalid
struct gasmix {
fraction_t o2;
fraction_t he;
};
static const struct gasmix gasmix_invalid = { { -1 }, { -1 } };
static const struct gasmix gasmix_air = { { 0 }, { 0 } };
struct icd_data { // This structure provides communication between function isobaric_counterdiffusion() and the calling software.
int dN2; // The change in fraction (permille) of nitrogen during the change
int dHe; // The change in fraction (permille) of helium during the change
};
extern bool isobaric_counterdiffusion(struct gasmix oldgasmix, struct gasmix newgasmix, struct icd_data *results);
extern double gas_compressibility_factor(struct gasmix gas, double bar);
extern double isothermal_pressure(struct gasmix gas, double p1, int volume1, int volume2);
extern double gas_density(struct gasmix gas, int pressure);
extern int same_gasmix(struct gasmix a, struct gasmix b);
static inline int get_o2(struct gasmix mix)
{
return mix.o2.permille ?: O2_IN_AIR;
}
static inline int get_he(struct gasmix mix)
{
return mix.he.permille;
}
struct gas_pressures {
double o2, n2, he;
};
extern void sanitize_gasmix(struct gasmix *mix);
extern int gasmix_distance(struct gasmix a, struct gasmix b);
extern bool gasmix_is_air(struct gasmix gasmix);
#ifdef __cplusplus
}
#endif
#endif