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master
libavutil/intfloat.h
77 строк
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Thilo Borgmann
Reinstate proper FFmpeg license for all files.
30 авг 2013, 19:47
30 авг 2013, 19:47
d814a83
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/* * 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 */