Globally rename the header inclusion guard names.
[libav.git] / libavcodec / armv4l / mathops.h
1 /*
2 * simple math operations
3 * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #ifndef AVCODEC_ARMV4L_MATHOPS_H
23 #define AVCODEC_ARMV4L_MATHOPS_H
24
25 #ifdef FRAC_BITS
26 # define MULL(a, b) \
27 ({ int lo, hi;\
28 asm("smull %0, %1, %2, %3 \n\t"\
29 "mov %0, %0, lsr %4\n\t"\
30 "add %1, %0, %1, lsl %5\n\t"\
31 : "=&r"(lo), "=&r"(hi)\
32 : "r"(b), "r"(a), "i"(FRAC_BITS), "i"(32-FRAC_BITS));\
33 hi; })
34 #endif
35
36 #ifdef HAVE_ARMV6
37 static inline av_const int MULH(int a, int b)
38 {
39 int r;
40 asm ("smmul %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
41 return r;
42 }
43 #define MULH MULH
44 #else
45 #define MULH(a, b) \
46 ({ int lo, hi;\
47 asm ("smull %0, %1, %2, %3" : "=&r"(lo), "=&r"(hi) : "r"(b), "r"(a));\
48 hi; })
49 #endif
50
51 static inline av_const int64_t MUL64(int a, int b)
52 {
53 union { uint64_t x; unsigned hl[2]; } x;
54 asm ("smull %0, %1, %2, %3"
55 : "=r"(x.hl[0]), "=r"(x.hl[1]) : "r"(a), "r"(b));
56 return x.x;
57 }
58 #define MUL64 MUL64
59
60 static inline av_const int64_t MAC64(int64_t d, int a, int b)
61 {
62 union { uint64_t x; unsigned hl[2]; } x = { d };
63 asm ("smlal %0, %1, %2, %3"
64 : "+r"(x.hl[0]), "+r"(x.hl[1]) : "r"(a), "r"(b));
65 return x.x;
66 }
67 #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
68 #define MLS64(d, a, b) MAC64(d, -(a), b)
69
70 #if defined(HAVE_ARMV5TE)
71
72 /* signed 16x16 -> 32 multiply add accumulate */
73 # define MAC16(rt, ra, rb) \
74 asm ("smlabb %0, %2, %3, %0" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
75 /* signed 16x16 -> 32 multiply */
76 # define MUL16(ra, rb) \
77 ({ int __rt; \
78 asm ("smulbb %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); \
79 __rt; })
80
81 #endif
82
83 #endif /* AVCODEC_ARMV4L_MATHOPS_H */