FFmpeg: libavutil/integer.c File Reference

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libavutil

Functions

integer.c File Reference

arbitrary precision integers More...

#include "common.h"
#include "integer.h"
#include "avassert.h"

Go to the source code of this file.

Functions

AVInteger av_add_i (AVInteger a, AVInteger b)

AVInteger av_sub_i (AVInteger a, AVInteger b)

int av_log2_i (AVInteger a)

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

AVInteger av_mul_i (AVInteger a, AVInteger b)

int av_cmp_i (AVInteger a, AVInteger b)

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

AVInteger av_shr_i (AVInteger a, int s)

bitwise shift

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

Return a % b.

AVInteger av_div_i (AVInteger a, AVInteger b)

Return a/b.

AVInteger av_int2i (int64_t a)

Convert the given int64_t to an AVInteger.

int64_t av_i2int (AVInteger a)

Convert the given AVInteger to an int64_t.

Detailed Description

arbitrary precision integers

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

Definition in file integer.c.

Function Documentation

AVInteger av_add_i ( AVInteger a,

AVInteger b

)

Definition at line 32 of file integer.c.

Referenced by av_rescale_rnd().

AVInteger av_sub_i ( AVInteger a,

AVInteger b

)

Definition at line 42 of file integer.c.

Referenced by av_mod_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 52 of file integer.c.

Referenced by av_mod_i(), and av_mul_i().

AVInteger av_mul_i ( AVInteger a,

AVInteger b

)

Definition at line 62 of file integer.c.

Referenced by av_rescale_rnd().

int av_cmp_i ( AVInteger a,

AVInteger b

)

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

Definition at line 83 of file integer.c.

Referenced by av_mod_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 95 of file integer.c.

Referenced by 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 109 of file integer.c.

Referenced by av_div_i().

AVInteger av_div_i ( AVInteger a,

AVInteger b

)

Return a/b.

Definition at line 133 of file integer.c.

Referenced by av_rescale_rnd().

AVInteger av_int2i ( int64_t a )

Convert the given int64_t to an AVInteger.

Definition at line 139 of file integer.c.

Referenced by av_rescale_rnd().

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 150 of file integer.c.

Referenced by av_rescale_rnd().

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