diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/config.h | 3 | ||||
| -rw-r--r-- | include/global.h | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/include/config.h b/include/config.h index 8c7229504..78651f023 100644 --- a/include/config.h +++ b/include/config.h @@ -41,6 +41,9 @@ #ifndef BUGFIX #define BUGFIX #endif // BUGFIX +#ifndef UBFIX +#define UBFIX +#endif // UBFIX #endif // MODERN #endif // GUARD_CONFIG_H 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 |