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intfloat.h
Go to the documentation of this file.
/*
* Copyright (c) 2011 Mans Rullgard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_INTFLOAT_H
#define AVUTIL_INTFLOAT_H
#include <stdint.h>
#include "attributes.h"
union av_intfloat32 {
uint32_t i;
float f;
};
union av_intfloat64 {
uint64_t i;
double f;
};
/**
* Reinterpret a 32-bit integer as a float.
*/
static av_always_inline float av_int2float(uint32_t i)
{
union av_intfloat32 v;
v.i = i;
return v.f;
}
/**
* Reinterpret a float as a 32-bit integer.
*/
static av_always_inline uint32_t av_float2int(float f)
{
union av_intfloat32 v;
v.f = f;
return v.i;
}
/**
* Reinterpret a 64-bit integer as a double.
*/
static av_always_inline double av_int2double(uint64_t i)
{
union av_intfloat64 v;
v.i = i;
return v.f;
}
/**
* Reinterpret a double as a 64-bit integer.
*/
static av_always_inline uint64_t av_double2int(double f)
{
union av_intfloat64 v;
v.f = f;
return v.i;
}
#endif /* AVUTIL_INTFLOAT_H */
attributes.h
Macro definitions for various function/variable attributes.
av_always_inline
#define av_always_inline
Definition attributes.h:64
av_float2int
static av_always_inline uint32_t av_float2int(float f)
Reinterpret a float as a 32-bit integer.
Definition intfloat.h:50
av_int2float
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
Definition intfloat.h:40
av_double2int
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition intfloat.h:70
av_int2double
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
Definition intfloat.h:60
av_intfloat32
Definition intfloat.h:27
av_intfloat32::f
float f
Definition intfloat.h:29
av_intfloat32::i
uint32_t i
Definition intfloat.h:28
av_intfloat64
Definition intfloat.h:32
av_intfloat64::f
double f
Definition intfloat.h:34
av_intfloat64::i
uint64_t i
Definition intfloat.h:33