29#ifndef AVUTIL_RATIONAL_H
30#define AVUTIL_RATIONAL_H
90 const int64_t tmp= a.
num * (int64_t)b.
den - b.
num * (int64_t)a.
den;
92 if(tmp)
return (
int)((tmp ^ a.
den ^ b.
den)>>63)|1;
93 else if(b.
den && a.
den)
return 0;
94 else if(a.
num && b.
num)
return (a.
num>>31) - (b.
num>>31);
105 return a.
num / (double) a.
den;
120int av_reduce(
int *dst_num,
int *dst_den, int64_t num, int64_t den, int64_t max);
Macro definitions for various function/variable attributes.
int av_nearer_q(AVRational q, AVRational q1, AVRational q2)
Find which of the two rationals is closer to another rational.
AVRational av_add_q(AVRational b, AVRational c) av_const
Add two rationals.
AVRational av_mul_q(AVRational b, AVRational c) av_const
Multiply two rationals.
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
int av_find_nearest_q_idx(AVRational q, const AVRational *q_list)
Find the value in a list of rationals nearest a given reference rational.
AVRational av_gcd_q(AVRational a, AVRational b, int max_den, AVRational def)
Return the best rational so that a and b are multiple of it.
static AVRational av_make_q(int num, int den)
Create an AVRational.
AVRational av_d2q(double d, int max) av_const
Convert a double precision floating point number to a rational.
static double av_q2d(AVRational a)
Convert an AVRational to a double.
static int av_cmp_q(AVRational a, AVRational b)
Compare two rationals.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
AVRational av_sub_q(AVRational b, AVRational c) av_const
Subtract one rational from another.
uint32_t av_q2intfloat(AVRational q)
Convert an AVRational to a IEEE 32-bit float expressed in fixed-point format.
AVRational av_div_q(AVRational b, AVRational c) av_const
Divide one rational by another.
Rational number (pair of numerator and denominator).