#include <stdint.h>
#include <math.h>
#include "attributes.h"
#include "rational.h"
#include "intfloat.h"

Macros
#define	M_E 2.7182818284590452354 /* e */

#define	M_LN2 0.69314718055994530942 /* log_e 2 */

#define	M_LN10 2.30258509299404568402 /* log_e 10 */

#define	M_LOG2_10 3.32192809488736234787 /* log_2 10 */

#define	M_PHI 1.61803398874989484820 /* phi / golden ratio */

#define	M_PI 3.14159265358979323846 /* pi */

#define	M_PI_2 1.57079632679489661923 /* pi/2 */

#define	M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */

#define	M_SQRT2 1.41421356237309504880 /* sqrt(2) */

#define	NAN av_int2float(0x7fc00000)

#define	INFINITY av_int2float(0x7f800000)

Enumerations
enum	AVRounding { AV_ROUND_ZERO = 0, AV_ROUND_INF = 1, AV_ROUND_DOWN = 2, AV_ROUND_UP = 3, AV_ROUND_NEAR_INF = 5, AV_ROUND_PASS_MINMAX = 8192 }
	Rounding methods. More...

Functions
int64_t av_const	av_gcd (int64_t a, int64_t b)
	Compute the greatest common divisor of two integer operands. More...

int64_t	av_rescale (int64_t a, int64_t b, int64_t c) av_const
	Rescale a 64-bit integer with rounding to nearest. More...

int64_t	av_rescale_rnd (int64_t a, int64_t b, int64_t c, enum AVRounding rnd) av_const
	Rescale a 64-bit integer with specified rounding. More...

int64_t	av_rescale_q (int64_t a, AVRational bq, AVRational cq) av_const
	Rescale a 64-bit integer by 2 rational numbers. More...

int64_t	av_rescale_q_rnd (int64_t a, AVRational bq, AVRational cq, enum AVRounding rnd) av_const
	Rescale a 64-bit integer by 2 rational numbers with specified rounding. More...

int	av_compare_ts (int64_t ts_a, AVRational tb_a, int64_t ts_b, AVRational tb_b)
	Compare two timestamps each in its own time base. More...

int64_t	av_compare_mod (uint64_t a, uint64_t b, uint64_t mod)
	Compare the remainders of two integer operands divided by a common divisor. More...

int64_t	av_rescale_delta (AVRational in_tb, int64_t in_ts, AVRational fs_tb, int duration, int64_t *last, AVRational out_tb)
	Rescale a timestamp while preserving known durations. More...

int64_t	av_add_stable (AVRational ts_tb, int64_t ts, AVRational inc_tb, int64_t inc)
	Add a value to a timestamp. More...

Macro Definition Documentation

◆ M_E

#define M_E 2.7182818284590452354 /* e */

Definition at line 37 of file mathematics.h.

◆ M_LN2

#define M_LN2 0.69314718055994530942 /* log_e 2 */

Definition at line 40 of file mathematics.h.

◆ M_LN10

#define M_LN10 2.30258509299404568402 /* log_e 10 */

Definition at line 43 of file mathematics.h.

◆ M_LOG2_10

#define M_LOG2_10 3.32192809488736234787 /* log_2 10 */

Definition at line 46 of file mathematics.h.

◆ M_PHI

#define M_PHI 1.61803398874989484820 /* phi / golden ratio */

Definition at line 49 of file mathematics.h.

◆ M_PI

#define M_PI 3.14159265358979323846 /* pi */

Examples: encode_audio.c, filter_audio.c, mux.c, and resample_audio.c.

Definition at line 52 of file mathematics.h.

◆ M_PI_2

#define M_PI_2 1.57079632679489661923 /* pi/2 */

Definition at line 55 of file mathematics.h.

◆ M_SQRT1_2

#define M_SQRT1_2 0.70710678118654752440 /* 1/sqrt(2) */

Definition at line 58 of file mathematics.h.

◆ M_SQRT2

#define M_SQRT2 1.41421356237309504880 /* sqrt(2) */

Definition at line 61 of file mathematics.h.

◆ NAN

#define NAN av_int2float(0x7fc00000)

Definition at line 64 of file mathematics.h.

◆ INFINITY

#define INFINITY av_int2float(0x7f800000)

Definition at line 67 of file mathematics.h.

Macros

Enumerations

Functions