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Diffstat (limited to 'libavutil/x86/intmath.h')
-rw-r--r-- | libavutil/x86/intmath.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/libavutil/x86/intmath.h b/libavutil/x86/intmath.h new file mode 100644 index 0000000..4525a4d --- /dev/null +++ b/libavutil/x86/intmath.h @@ -0,0 +1,37 @@ +/* + * Copyright (c) 2010 Mans Rullgard <mans@mansr.com> + * + * 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_X86_INTMATH_H +#define AVUTIL_X86_INTMATH_H + +#if HAVE_INLINE_ASM +#define FASTDIV(a,b) \ + ({\ + int ret, dmy;\ + __asm__ volatile(\ + "mull %3"\ + :"=d"(ret), "=a"(dmy)\ + :"1"((unsigned int)(a)), "rm"(ff_inverse[b])\ + );\ + ret;\ + }) +#endif + +#endif /* AVUTIL_X86_INTMATH_H */ |