diff options
Diffstat (limited to 'dive.c')
| -rw-r--r-- | dive.c | 17 |
1 files changed, 6 insertions, 11 deletions
@@ -1665,13 +1665,8 @@ int gasmix_distance(const struct gasmix *a, const struct gasmix *b) * *mix = structure containing cylinder gas mixture information. * This function called by: calculate_gas_information_new() in profile.c; add_segment() in deco.c. */ -extern void fill_pressures(struct gas_pressures *pressures, const double amb_pressure, const struct gasmix *mix, double po2, enum dive_comp_type divemode, int sac) +extern void fill_pressures(struct gas_pressures *pressures, const double amb_pressure, const struct gasmix *mix, double po2, enum dive_comp_type divemode) { - if (!sac) { - /* The SAC has not yet been computer, so use the default * - * We might try harder... */ - sac = prefs.bottomsac; - } if (po2) { // This is probably a CCR dive where pressures->o2 is defined if (po2 >= amb_pressure) { pressures->o2 = amb_pressure; @@ -1687,14 +1682,14 @@ extern void fill_pressures(struct gas_pressures *pressures, const double amb_pre } } else { if (divemode == PSCR) { /* The steady state approximation should be good enough */ - pressures->o2 = get_o2(mix) / 1000.0 * amb_pressure - (1.0 - get_o2(mix) / 1000.0) * prefs.o2consumption / (sac * prefs.pscr_ratio / 1000.0); + pressures->o2 = get_o2(mix) / 1000.0 * amb_pressure - (1.0 - get_o2(mix) / 1000.0) * prefs.o2consumption / (prefs.bottomsac * prefs.pscr_ratio / 1000.0); pressures->he = (amb_pressure - pressures->o2) * get_he(mix) / (1000.0 - get_o2(mix)); pressures->n2 = (amb_pressure - pressures->o2) * (1000 - get_o2(mix) - get_he(mix)) / (1000.0 - get_o2(mix)); } else { - // Open circuit dives: no gas pressure values available, they need to be calculated - pressures->o2 = get_o2(mix) / 1000.0 * amb_pressure; // These calculations are also used if the CCR calculation above.. - pressures->he = get_he(mix) / 1000.0 * amb_pressure; // ..returned a po2 of zero (i.e. o2 sensor data not resolvable) - pressures->n2 = (1000 - get_o2(mix) - get_he(mix)) / 1000.0 * amb_pressure; + // Open circuit dives: no gas pressure values available, they need to be calculated + pressures->o2 = get_o2(mix) / 1000.0 * amb_pressure; // These calculations are also used if the CCR calculation above.. + pressures->he = get_he(mix) / 1000.0 * amb_pressure; // ..returned a po2 of zero (i.e. o2 sensor data not resolvable) + pressures->n2 = (1000 - get_o2(mix) - get_he(mix)) / 1000.0 * amb_pressure; } } } |