2 * simple math operations
3 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_ARM_MATHOPS_H
23 #define AVCODEC_ARM_MATHOPS_H
27 #include "libavutil/common.h"
33 static inline av_const int MULH(int a, int b)
36 __asm__ ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
41 #define MLS64(d, a, b) MAC64(d, -(a), b)
45 /* signed 16x16 -> 32 multiply add accumulate */
46 # define MAC16(rt, ra, rb) \
47 __asm__ ("smlabb %0, %1, %2, %0" : "+r"(rt) : "r"(ra), "r"(rb));
49 /* signed 16x16 -> 32 multiply */
51 static inline av_const int MUL16(int ra, int rb)
54 __asm__ ("smulbb %0, %1, %2" : "=r"(rt) : "r"(ra), "r"(rb));
60 #define mid_pred mid_pred
61 static inline av_const int mid_pred(int a, int b, int c)
82 #endif /* HAVE_INLINE_ASM */
84 #endif /* AVCODEC_ARM_MATHOPS_H */