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libavutil
intfloat.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2011 Mans Rullgard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_INTFLOAT_H
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#define AVUTIL_INTFLOAT_H
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#include <stdint.h>
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#include "
attributes.h
"
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union
av_intfloat32
{
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uint32_t
i
;
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float
f
;
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};
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union
av_intfloat64
{
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uint64_t
i
;
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double
f
;
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};
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/**
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* Reinterpret a 32-bit integer as a float.
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*/
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static
av_always_inline
float
av_int2float
(uint32_t i)
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{
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union
av_intfloat32
v;
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v.
i
=
i
;
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return
v.
f
;
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}
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/**
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* Reinterpret a float as a 32-bit integer.
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*/
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static
av_always_inline
uint32_t
av_float2int
(
float
f
)
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{
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union
av_intfloat32
v;
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v.
f
=
f
;
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return
v.
i
;
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}
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/**
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* Reinterpret a 64-bit integer as a double.
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*/
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static
av_always_inline
double
av_int2double
(uint64_t
i
)
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{
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union
av_intfloat64
v;
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v.
i
=
i
;
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return
v.
f
;
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}
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/**
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* Reinterpret a double as a 64-bit integer.
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*/
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static
av_always_inline
uint64_t
av_double2int
(
double
f
)
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{
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union
av_intfloat64
v;
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v.
f
=
f
;
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return
v.
i
;
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}
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#endif
/* AVUTIL_INTFLOAT_H */
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1.8.2