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Make gas mod be reasonable for users of imperial units as well

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Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2014-06-25 21:36:30 +08:00
parent 65c5d6815c
commit 7f3efbdc98
6 changed files with 10 additions and 5 deletions
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6
units.h
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@ -16,6 +16,12 @@ extern "C" {
#define SURFACE_PRESSURE_STRING "1013"
#define ZERO_C_IN_MKELVIN 273150 // mKelvin
#ifdef __cplusplus
#define M_OR_FT(_m, _f) ((prefs.units.length == units::METERS) ? ((_m) * 1000) : (feet_to_mm(_f)))
#else
#define M_OR_FT(_m, _f) ((prefs.units.length == METERS) ? ((_m) * 1000) : (feet_to_mm(_f)))
#endif
/* Salinity is expressed in weight in grams per 10l */
#define SEAWATER_SALINITY 10300
#define FRESHWATER_SALINITY 10000