Statistics
| Branch: | Revision:

ffmpeg / libavutil / x86 / intmath.h @ 80a07f6e

History | View | Annotate | Download (1.13 KB)

1 75fb5c24 Måns Rullgård
/*
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 */