diff options
Diffstat (limited to 'common/math_defs.h')
| -rw-r--r-- | common/math_defs.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/common/math_defs.h b/common/math_defs.h index 04d73f42..99cc62ec 100644 --- a/common/math_defs.h +++ b/common/math_defs.h @@ -40,6 +40,19 @@ static inline float cbrtf(float f) } #endif +#ifndef HAVE_COPYSIGNF +static inline float copysignf(float x, float y) +{ + union { + float f; + unsigned int u; + } ux = { x }, uy = { y }; + ux.u &= 0x7fffffffu; + ux.u |= (uy.u&0x80000000u); + return ux.f; +} +#endif + #define DEG2RAD(x) ((float)(x) * (float)(M_PI/180.0)) #define RAD2DEG(x) ((float)(x) * (float)(180.0/M_PI)) |