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rational.h File Reference

rational numbers More...

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

Go to the source code of this file.

Data Structures

struct  AVRational
 rational number numerator/denominator More...


static int av_cmp_q (AVRational a, AVRational b)
 Compare two rationals.
static double av_q2d (AVRational a)
 Convert rational to double.
int av_reduce (int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
 Reduce a fraction.
AVRational av_mul_q (AVRational b, AVRational c) av_const
 Multiply two rationals.
AVRational av_div_q (AVRational b, AVRational c) av_const
 Divide one rational by another.
AVRational av_add_q (AVRational b, AVRational c) av_const
 Add two rationals.
AVRational av_sub_q (AVRational b, AVRational c) av_const
 Subtract one rational from another.
static av_always_inline AVRational av_inv_q (AVRational q)
 Invert a rational.
AVRational av_d2q (double d, int max) av_const
 Convert a double precision floating point number to a rational.
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.

Detailed Description

rational numbers

Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file rational.h.