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38 lines
1.2 KiB
38 lines
1.2 KiB
/* |
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* Copyright (c) 2015 James Almer |
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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_X86_INTMATH_H |
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#define AVUTIL_X86_INTMATH_H |
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#include <stdint.h> |
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#include "config.h" |
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/* Our generic version of av_popcount is faster than GCC's built-in on |
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* CPUs that don't support the popcnt instruction. |
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*/ |
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#if defined(__GNUC__) && defined(__POPCNT__) |
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#define av_popcount __builtin_popcount |
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#if ARCH_X86_64 |
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#define av_popcount64 __builtin_popcountll |
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#endif |
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#endif /* defined(__GNUC__) && defined(__POPCNT__) */ |
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#endif /* AVUTIL_X86_INTMATH_H */
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