diff options
Diffstat (limited to 'core/equipment.c')
| -rw-r--r-- | core/equipment.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/core/equipment.c b/core/equipment.c index 325c57cb7..81033ace6 100644 --- a/core/equipment.c +++ b/core/equipment.c @@ -10,6 +10,7 @@ #include <stdlib.h> #include <stdarg.h> #include <time.h> +#include <limits.h> #include "equipment.h" #include "gettext.h" #include "dive.h" @@ -101,6 +102,36 @@ const char *gasname(struct gasmix gasmix) return gas; } +int gas_volume(const cylinder_t *cyl, pressure_t p) +{ + double bar = p.mbar / 1000.0; + double z_factor = gas_compressibility_factor(cyl->gasmix, bar); + return lrint(cyl->type.size.mliter * bar_to_atm(bar) / z_factor); +} + +int find_best_gasmix_match(struct gasmix mix, const cylinder_t array[], unsigned int used) +{ + int i; + int best = -1, score = INT_MAX; + + for (i = 0; i < MAX_CYLINDERS; i++) { + const cylinder_t *match; + int distance; + + if (used & (1 << i)) + continue; + match = array + i; + if (cylinder_nodata(match)) + continue; + distance = gasmix_distance(mix, match->gasmix); + if (distance >= score) + continue; + best = i; + score = distance; + } + return best; +} + bool weightsystem_none(const weightsystem_t *ws) { return !ws->weight.grams && !ws->description; |