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| author | GriffinR <griffin.g.richards@gmail.com> | 2021-03-19 18:17:43 -0400 |
|---|---|---|
| committer | huderlem <huderlem@gmail.com> | 2021-03-21 13:43:14 -0500 |
| commit | dfc6ee0e9e20658a80e4080da16c2f6423b85457 (patch) | |
| tree | c7b56332eb5fcb99e4b2b10ae7eb6ec59346f744 /include/global.h | |
| parent | 28aff5b179d14aa8cb440d2f72c3e098482f6a75 (diff) | |
Add SAFE_DIV
Diffstat (limited to 'include/global.h')
| -rw-r--r-- | include/global.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/global.h b/include/global.h index 1992ff819..112d2cbc4 100644 --- a/include/global.h +++ b/include/global.h @@ -74,6 +74,14 @@ #define abs(x) (((x) < 0) ? -(x) : (x)) #endif +// Used in cases where division by 0 can occur in the retail version. +// Avoids invalid opcodes on some emulators, and the otherwise UB. +#ifdef UBFIX +#define SAFE_DIV(a, b) ((b) ? (a) / (b) : 0) +#else +#define SAFE_DIV(a, b) ((a) / (b)) +#endif + // Extracts the upper 16 bits of a 32-bit number #define HIHALF(n) (((n) & 0xFFFF0000) >> 16) |