FFmpeg: libavutil/integer.h File Reference

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Data Structures | Macros | Functions

integer.h File Reference

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

Go to the source code of this file.

Data Structures

struct AVInteger

Macros

#define AV_INTEGER_SIZE 8

Functions

AVInteger av_add_i (AVInteger a, AVInteger b) av_const

AVInteger av_sub_i (AVInteger a, AVInteger b) av_const

int av_log2_i (AVInteger a) av_const

Return the rounded-down value of the base 2 logarithm of the given AVInteger. More...

AVInteger av_mul_i (AVInteger a, AVInteger b) av_const

int av_cmp_i (AVInteger a, AVInteger b) av_const

Return 0 if a==b, 1 if a>b and -1 if a<b. More...

AVInteger av_shr_i (AVInteger a, int s) av_const

bitwise shift More...

AVInteger av_mod_i (AVInteger *quot, AVInteger a, AVInteger b)

Return a % b. More...

AVInteger av_div_i (AVInteger a, AVInteger b) av_const

Return a/b. More...

AVInteger av_int2i (int64_t a) av_const

Convert the given int64_t to an AVInteger. More...

int64_t av_i2int (AVInteger a) av_const

Convert the given AVInteger to an int64_t. More...

Detailed Description

arbitrary precision integers

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

Definition in file integer.h.

Macro Definition Documentation

◆ AV_INTEGER_SIZE

#define AV_INTEGER_SIZE 8

Definition at line 34 of file integer.h.

Function Documentation

◆ av_add_i()

AVInteger av_add_i ( AVInteger a,

AVInteger b

) const

Definition at line 36 of file integer.c.

Referenced by av_rescale_rnd(), and main().

◆ av_sub_i()

AVInteger av_sub_i ( AVInteger a,

AVInteger b

) const

Definition at line 46 of file integer.c.

Referenced by av_mod_i(), and main().

◆ av_log2_i()

int av_log2_i ( AVInteger a ) const

Return the rounded-down value of the base 2 logarithm of the given AVInteger.

This is simply the index of the most significant bit which is 1, or 0 if all bits are 0.

Definition at line 56 of file integer.c.

Referenced by av_mod_i(), av_mul_i(), and main().

◆ av_mul_i()

AVInteger av_mul_i ( AVInteger a,

AVInteger b

) const

Definition at line 66 of file integer.c.

Referenced by av_rescale_rnd(), and main().

◆ av_cmp_i()

int av_cmp_i ( AVInteger a,

AVInteger b

) const

Return 0 if a==b, 1 if a>b and -1 if a<b.

Definition at line 87 of file integer.c.

Referenced by av_mod_i(), and main().

◆ av_shr_i()

AVInteger av_shr_i ( AVInteger a,

int s

) const

bitwise shift

Parameters: s the number of bits by which the value should be shifted right, may be negative for shifting left

Definition at line 99 of file integer.c.

Referenced by av_mod_i(), and main().

◆ av_mod_i()

AVInteger av_mod_i ( AVInteger * quot,

AVInteger a,

AVInteger b

)

Return a % b.

Parameters: quot a/b will be stored here.

Definition at line 113 of file integer.c.

Referenced by av_div_i(), and av_mod_i().

◆ av_div_i()

AVInteger av_div_i ( AVInteger a,

AVInteger b

) const

Return a/b.

Definition at line 143 of file integer.c.

Referenced by av_rescale_rnd(), and main().

◆ av_int2i()

AVInteger av_int2i ( int64_t a ) const

Convert the given int64_t to an AVInteger.

Definition at line 149 of file integer.c.

Referenced by av_rescale_rnd(), and main().

◆ av_i2int()

int64_t av_i2int ( AVInteger a ) const

Convert the given AVInteger to an int64_t.

If the AVInteger is too large to fit into an int64_t, then only the least significant 64 bits will be used.

Definition at line 160 of file integer.c.

Referenced by av_rescale_rnd(), and main().

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