diff options
| -rw-r--r-- | core/dive.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/core/dive.h b/core/dive.h index ae980947a..13ad6b509 100644 --- a/core/dive.h +++ b/core/dive.h @@ -169,8 +169,11 @@ static inline bool gasmix_is_air(const struct gasmix *gasmix) static inline int interpolate(int a, int b, int part, int whole) { /* It is doubtful that we actually need floating point for this, but whatever */ - double x = (double)a * (whole - part) + (double)b * part; - return rint(x / whole); + if (whole) { + double x = (double)a * (whole - part) + (double)b * part; + return rint(x / whole); + } + return (a+b)/2; } void get_gas_string(const struct gasmix *gasmix, char *text, int len); |