FFmpeg/libavutil/x86/intmath.h

/*
 * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; 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

#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 */