rational numbers More...

#include <stdint.h>
#include <limits.h>
#include "attributes.h"

Data Structures
struct	AVRational
	rational number numerator/denominator More...

Functions
static int	av_cmp_q (AVRational a, AVRational b)
	Compare two rationals. More...

static double	av_q2d (AVRational a)
	Convert rational to double. More...

int	av_reduce (int dst_num, int dst_den, int64_t num, int64_t den, int64_t max)
	Reduce a fraction. More...

AVRational	av_mul_q (AVRational b, AVRational c) av_const
	Multiply two rationals. More...

AVRational	av_div_q (AVRational b, AVRational c) av_const
	Divide one rational by another. More...

AVRational	av_add_q (AVRational b, AVRational c) av_const
	Add two rationals. More...

AVRational	av_sub_q (AVRational b, AVRational c) av_const
	Subtract one rational from another. More...

static av_always_inline AVRational	av_inv_q (AVRational q)
	Invert a rational. More...

AVRational	av_d2q (double d, int max) av_const
	Convert a double precision floating point number to a rational. More...

int	av_nearer_q (AVRational q, AVRational q1, AVRational q2)

int	av_find_nearest_q_idx (AVRational q, const AVRational *q_list)
	Find the nearest value in q_list to q. More...

Detailed Description

rational numbers

Definition in file rational.h.

Macro Definition Documentation

#define AVUTIL_RATIONAL_H

Definition at line 2818 of file avcodec.h.

inlinestatic

Compare two rationals.

Parameters

a	first rational
b	second rational

Returns: 0 if a==b, 1 if a>b, -1 if a<b, and INT_MIN if one of the values is of the form 0/0

Definition at line 55 of file rational.h.

static double av_q2d ( AVRational a )

inlinestatic

Convert rational to double.

Parameters

a	rational to convert

Definition at line 69 of file rational.h.

static av_always_inline AVRational av_inv_q ( AVRational q )

static

Invert a rational.

Parameters

q value

Definition at line 122 of file rational.h.