PeerStreamer

/*

 * simple math operations

 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al

 *

 * 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 FFMPEG_I386_MATHOPS_H

#define FFMPEG_I386_MATHOPS_H

#ifdef FRAC_BITS

#   define MULL(ra, rb) \

        ({ int rt, dummy; asm (\

            "imull %3               \n\t"\

            "shrdl %4, %%edx, %%eax \n\t"\

            : "=a"(rt), "=d"(dummy)\

            : "a" (ra), "rm" (rb), "i"(FRAC_BITS));\

         rt; })

#endif

#define MULH(ra, rb) \

    ({ int rt, dummy;\

     asm ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" (ra), "rm" (rb));\

     rt; })

#define MUL64(ra, rb) \

    ({ int64_t rt;\

     asm ("imull %2\n\t" : "=A"(rt) : "a" (ra), "g" (rb));\

     rt; })

#endif /* FFMPEG_I386_MATHOPS_H */