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Prepare for PSCR calculations

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Calculations for passive semi-closed rebreathers are pretty much like OC
except the pO2 is lower bey a certain (SAC dependent) factor. This patch
introduces the corresponding calculations in case dctype == PSCR which is
so far never set and there is currently no UI for these calculations. As
pO2 is SAC dependent it takes a certain attempt at getting it and drops to
defaults from the prefs otherwise.

As there is no UI at this point and I also don't have any dives, this has
not received much testing, yet, but it compiles. At least.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Robert C. Helling 2014-10-24 16:40:21 +02:00 • committed by Dirk Hohndel
parent f31d34adfd
commit 06ddfc0122
8 changed files with 29 additions and 19 deletions
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6
dive.h
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@ -47,7 +47,7 @@ extern "C" {
#include <stdbool.h>
#endif
enum dive_comp_type {OC, CCR}; // Flags (Open-circuit and Closed-circuit-rebreather) for setting dive computer type
enum dive_comp_type {OC, CCR, PSCR}; // Flags (Open-circuit and Closed-circuit-rebreather) for setting dive computer type
enum cylinderuse {oxygen, diluent, bailout}; // The different uses for cylinders in CCR dives
struct gasmix {
@ -140,7 +140,7 @@ struct gas_pressures {
double o2, n2, he;
};
extern void fill_pressures(struct gas_pressures *pressures, const double amb_pressure, const struct gasmix *mix, double po2);
extern void fill_pressures(struct gas_pressures *pressures, const double amb_pressure, const struct gasmix *mix, double po2, enum dive_comp_type dctype, int sac);
extern void sanitize_gasmix(struct gasmix *mix);
extern int gasmix_distance(const struct gasmix *a, const struct gasmix *b);
@ -731,7 +731,7 @@ extern void subsurface_command_line_exit(int *, char ***);
#define FRACTION(n, x) ((unsigned)(n) / (x)), ((unsigned)(n) % (x))
extern double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int setpoint, const struct dive *dive);
extern double add_segment(double pressure, const struct gasmix *gasmix, int period_in_seconds, int setpoint, const struct dive *dive, int sac);
extern void clear_deco(double surface_pressure);
extern void dump_tissues(void);
extern unsigned int deco_allowed_depth(double tissues_tolerance, double surface_pressure, struct dive *dive, bool smooth);