rational64.c File Reference

64-bit rational numbers More...

#include <limits.h>
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/int128.h"
#include "libavutil/intmath.h"
#include "rational64.h"

Go to the source code of this file.

Functions
static av_always_inline uint64_t	high64 (av_int128 a)
static av_always_inline uint64_t	gcd_u64 (uint64_t a, uint64_t b)
static av_int128	gcd128 (av_int128 a, av_int128 b)
static AVRational64	reduce64 (av_int128 num, av_int128 den)
static av_always_inline int	fits31 (int64_t x)
static av_always_inline int	fits31_q (AVRational64 b, AVRational64 c)
static AVRational64	reduce64_fast (int64_t num, int64_t den)
int	ff_cmp_q64 (AVRational64 a, AVRational64 b)
	Compare two 64-bit rationals.
AVRational64	ff_mul_q64 (AVRational64 b, AVRational64 c)
	Multiply two 64-bit rationals.
AVRational64	ff_div_q64 (AVRational64 b, AVRational64 c)
	Divide one 64-bit rational by another.
AVRational64	ff_add_q64 (AVRational64 b, AVRational64 c)
	Add two 64-bit rationals.
AVRational64	ff_sub_q64 (AVRational64 b, AVRational64 c)
	Subtract one 64-bit rational from another.

Detailed Description

64-bit rational numbers

Author

Niklas Haas

Definition in file rational64.c.

Function Documentation

high64()

static av_always_inline uint64_t high64 ( av_int128 a )

static

Definition at line 37 of file rational64.c.

Referenced by reduce64().

gcd_u64()

static av_always_inline uint64_t gcd_u64 ( uint64_t a, uint64_t b )

static

Definition at line 43 of file rational64.c.

Referenced by reduce64(), and reduce64_fast().

gcd128()

static av_int128 gcd128 ( av_int128 a, av_int128 b )

static

Definition at line 61 of file rational64.c.

Referenced by reduce64().

reduce64()

static AVRational64 reduce64 ( av_int128 num, av_int128 den )

static

Definition at line 71 of file rational64.c.

Referenced by ff_add_q64(), ff_mul_q64(), and ff_sub_q64().

fits31()

static av_always_inline int fits31 ( int64_t x )

static

Definition at line 156 of file rational64.c.

Referenced by fits31_q().

fits31_q()

static av_always_inline int fits31_q ( AVRational64 b, AVRational64 c )

static

Definition at line 161 of file rational64.c.

Referenced by ff_add_q64(), ff_cmp_q64(), ff_mul_q64(), and ff_sub_q64().

reduce64_fast()

static AVRational64 reduce64_fast ( int64_t num, int64_t den )

static

Definition at line 167 of file rational64.c.

Referenced by ff_add_q64(), ff_mul_q64(), and ff_sub_q64().