diff options
| -rw-r--r-- | libavutil/mathematics.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/libavutil/mathematics.h b/libavutil/mathematics.h index a9dfe7eccf..244baca020 100644 --- a/libavutil/mathematics.h +++ b/libavutil/mathematics.h @@ -22,8 +22,22 @@ #define FFMPEG_MATHEMATICS_H #include <stdint.h> +#include <math.h> #include "rational.h" +#ifndef M_E +#define M_E 2.7182818284590452354 /* e */ +#endif +#ifndef M_LN2 +#define M_LN2 0.69314718055994530942 /* log_e 2 */ +#endif +#ifndef M_LN10 +#define M_LN10 2.30258509299404568402 /* log_e 10 */ +#endif +#ifndef M_SQRT1_2 +#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */ +#endif + enum AVRounding { AV_ROUND_ZERO = 0, ///< round toward zero AV_ROUND_INF = 1, ///< round away from zero |