00001 /* 00002 * simple math operations 00003 * Copyright (c) 2001, 2002 Fabrice Bellard. 00004 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00023 #ifndef FFMPEG_PPC_MATHOPS_H 00024 #define FFMPEG_PPC_MATHOPS_H 00025 00026 #if defined(ARCH_POWERPC_405) 00027 /* signed 16x16 -> 32 multiply add accumulate */ 00028 # define MAC16(rt, ra, rb) \ 00029 asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb)); 00030 00031 /* signed 16x16 -> 32 multiply */ 00032 # define MUL16(ra, rb) \ 00033 ({ int __rt; 00034 asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); 00035 __rt; }) 00036 #endif 00037 00038 #endif /* FFMPEG_PPC_MATHOPS_H */