From 75fb5c24ed16743a31d5838b55984b4bf89d48bb Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?M=C3=A5ns=20Rullg=C3=A5rd?= <mans@mansr.com> Date: Tue, 19 Jan 2010 23:25:36 +0000 Subject: Move FASTDIV macro to intmath.h Originally committed as revision 21335 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavutil/x86/intmath.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 libavutil/x86/intmath.h (limited to 'libavutil/x86') diff --git a/libavutil/x86/intmath.h b/libavutil/x86/intmath.h new file mode 100644 index 0000000000..7528c55dc8 --- /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 + +#include "libavutil/common.h" + +#define FASTDIV(a,b) \ + ({\ + int ret, dmy;\ + __asm__ volatile(\ + "mull %3"\ + :"=d"(ret), "=a"(dmy)\ + :"1"(a), "g"(ff_inverse[b])\ + );\ + ret;\ + }) + +#endif /* AVUTIL_X86_INTMATH_H */ -- cgit v1.2.3