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libavutil/x86/intmath.h

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00001 /*
00002  * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
00003  *
00004  * This file is part of FFmpeg.
00005  *
00006  * FFmpeg is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * FFmpeg is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with FFmpeg; if not, write to the Free Software
00018  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00019  */
00020 
00021 #ifndef AVUTIL_X86_INTMATH_H
00022 #define AVUTIL_X86_INTMATH_H
00023 
00024 #define FASTDIV(a,b) \
00025     ({\
00026         int ret, dmy;\
00027         __asm__ volatile(\
00028             "mull %3"\
00029             :"=d"(ret), "=a"(dmy)\
00030             :"1"(a), "g"(ff_inverse[b])\
00031             );\
00032         ret;\
00033     })
00034 
00035 #endif /* AVUTIL_X86_INTMATH_H */

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