Add ARCH_X86_32 as a new define for 32 bit x86 architectures and change
[libav.git] / libavcodec / mathops.h
1 /*
2 * simple math operations
3 * Copyright (c) 2001, 2002 Fabrice Bellard.
4 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22 #ifndef MATHOPS_H
23 #define MATHOPS_H
24
25 #ifdef ARCH_X86_32
26
27 #include "i386/mathops.h"
28
29 #elif defined(ARCH_ARMV4L)
30
31 #include "armv4l/mathops.h"
32
33 #elif defined(ARCH_PPC)
34
35 #include "ppc/mathops.h"
36
37 #endif
38
39 /* generic implementation */
40
41 #ifndef MULL
42 # define MULL(a,b) (((int64_t)(a) * (int64_t)(b)) >> FRAC_BITS)
43 #endif
44
45 #ifndef MULH
46 //gcc 3.4 creates an incredibly bloated mess out of this
47 //# define MULH(a,b) (((int64_t)(a) * (int64_t)(b))>>32)
48
49 static always_inline int MULH(int a, int b){
50 return ((int64_t)(a) * (int64_t)(b))>>32;
51 }
52 #endif
53
54 #ifndef MUL64
55 # define MUL64(a,b) ((int64_t)(a) * (int64_t)(b))
56 #endif
57
58 /* signed 16x16 -> 32 multiply add accumulate */
59 #ifndef MAC16
60 # define MAC16(rt, ra, rb) rt += (ra) * (rb)
61 #endif
62
63 /* signed 16x16 -> 32 multiply */
64 #ifndef MUL16
65 # define MUL16(ra, rb) ((ra) * (rb))
66 #endif
67
68 #endif //MATHOPS_H
69