diff options
Diffstat (limited to 'common')
| -rw-r--r-- | common/math_defs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/math_defs.h b/common/math_defs.h index 1b394976..cbe9091f 100644 --- a/common/math_defs.h +++ b/common/math_defs.h @@ -22,6 +22,13 @@ static const union msvc_inf_hack { #define HUGE_VALF (msvc_inf_union.f) #endif +#ifndef HAVE_LOG2F +static inline float log2f(float f) +{ + return logf(f) / logf(2.0f); +} +#endif + #define DEG2RAD(x) ((float)(x) * (F_PI/180.0f)) #define RAD2DEG(x) ((float)(x) * (180.0f/F_PI)) |