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| author | GriffinR <griffin.g.richards@gmail.com> | 2021-07-03 17:25:05 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-07-03 17:25:05 -0400 |
| commit | 585d92f298e1edd8f756f8362de45c9fadc6fcab (patch) | |
| tree | 2e3b17d37c4782f575329fc0fbe1f7bd406e6bad /include/global.h | |
| parent | 558097f42326f19044a6351004468a46d6ee0b38 (diff) | |
| parent | ff94d49a45ef605cfaed1268aa5a230958e25cd9 (diff) | |
Merge pull request #445 from Kurausukun/ubfix
Port UBFIX Macro and Some Usages from Emerald
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 1d12fdae9..f7abcc23d 100644 --- a/include/global.h +++ b/include/global.h @@ -73,6 +73,14 @@ #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 + // There are many quirks in the source code which have overarching behavioral differences from // a number of other files. For example, diploma.c seems to declare rodata before each use while // other files declare out of order and must be at the beginning. There are also a number of |