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Make depth conversion work for negative depths

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This is needed in the altitude pressure conversion as there
negative altitudes are possible (for diving in the netherlands
or the Dead Sea).

Signed-off-by: Robert C. Helling <helling@atdotde.de>
This commit is contained in:
Robert C. Helling 2017-03-10 07:22:31 +01:00 • committed by Dirk Hohndel
parent af96ec5d04
commit 295b1b78d8
5 changed files with 13 additions and 9 deletions
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core/dive.h
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@ -131,7 +131,7 @@ extern double get_temp_units(unsigned int mk, const char **units);
extern double get_weight_units(unsigned int grams, int *frac, const char **units);
extern double get_vertical_speed_units(unsigned int mms, int *frac, const char **units);
extern unsigned int units_to_depth(double depth);
extern depth_t units_to_depth(double depth);
extern int units_to_sac(double volume);
/* Volume in mliter of a cylinder at pressure 'p' */