Move FASTDIV macro to intmath.h
[libav.git] / libavutil / x86 / intmath.h
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75fb5c24
MR
1/*
2 * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#ifndef AVUTIL_X86_INTMATH_H
22#define AVUTIL_X86_INTMATH_H
23
24#include "libavutil/common.h"
25
26#define FASTDIV(a,b) \
27 ({\
28 int ret, dmy;\
29 __asm__ volatile(\
30 "mull %3"\
31 :"=d"(ret), "=a"(dmy)\
32 :"1"(a), "g"(ff_inverse[b])\
33 );\
34 ret;\
35 })
36
37#endif /* AVUTIL_X86_INTMATH_H */