56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
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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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/**
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* @file
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* Compatibility libm for table generation files
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*/
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#ifndef AVUTIL_TABLEGEN_H
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#define AVUTIL_TABLEGEN_H
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#include <math.h>
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// we lack some functions on all host platforms, and we don't care about
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// performance and/or strict ISO C semantics as it's performed at build time
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static inline double ff_cbrt(double x)
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{
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return x < 0 ? -pow(-x, 1.0 / 3.0) : pow(x, 1.0 / 3.0);
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}
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#define cbrt ff_cbrt
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static inline double ff_rint(double x)
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{
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return x >= 0 ? floor(x + 0.5) : ceil(x - 0.5);
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}
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#define rint ff_rint
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static inline long long ff_llrint(double x)
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{
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return rint(x);
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}
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#define llrint ff_llrint
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static inline long ff_lrint(double x)
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{
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return rint(x);
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}
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#define lrint ff_lrint
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#endif /* AVUTIL_TABLEGEN_H */
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