misc/winutils/include/libavutil/intfloat.h
author koda
Wed, 24 Oct 2012 14:55:31 +0100
changeset 7813 7ac83d79b897
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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 Libav.
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 *
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 * Libav 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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 * Libav 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 Libav; 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 */