Adding missing () to mathops.h.
[libav.git] / libavcodec / x86 / 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_X86_MATHOPS_H
23 #define AVCODEC_X86_MATHOPS_H
24
25 #include "config.h"
26 #include "libavutil/common.h"
27
28 #if ARCH_X86_32
29 #define MULL(ra, rb, shift) \
30 ({ int rt, dummy; __asm__ (\
31 "imull %3 \n\t"\
32 "shrdl %4, %%edx, %%eax \n\t"\
33 : "=a"(rt), "=d"(dummy)\
34 : "a" ((int)(ra)), "rm" ((int)(rb)), "i"(shift));\
35 rt; })
36
37 #define MULH(ra, rb) \
38 ({ int rt, dummy;\
39 __asm__ ("imull %3\n\t" : "=d"(rt), "=a"(dummy): "a" ((int)(ra)), "rm" ((int)(rb)));\
40 rt; })
41
42 #define MUL64(ra, rb) \
43 ({ int64_t rt;\
44 __asm__ ("imull %2\n\t" : "=A"(rt) : "a" ((int)(ra)), "g" ((int)(rb)));\
45 rt; })
46 #endif
47
48 #if HAVE_CMOV
49 /* median of 3 */
50 #define mid_pred mid_pred
51 static inline av_const int mid_pred(int a, int b, int c)
52 {
53 int i=b;
54 __asm__ volatile(
55 "cmp %2, %1 \n\t"
56 "cmovg %1, %0 \n\t"
57 "cmovg %2, %1 \n\t"
58 "cmp %3, %1 \n\t"
59 "cmovl %3, %1 \n\t"
60 "cmp %1, %0 \n\t"
61 "cmovg %1, %0 \n\t"
62 :"+&r"(i), "+&r"(a)
63 :"r"(b), "r"(c)
64 );
65 return i;
66 }
67 #endif
68
69 #if HAVE_CMOV
70 #define COPY3_IF_LT(x, y, a, b, c, d)\
71 __asm__ volatile(\
72 "cmpl %0, %3 \n\t"\
73 "cmovl %3, %0 \n\t"\
74 "cmovl %4, %1 \n\t"\
75 "cmovl %5, %2 \n\t"\
76 : "+&r" (x), "+&r" (a), "+r" (c)\
77 : "r" (y), "r" (b), "r" (d)\
78 );
79 #endif
80
81 // avoid +32 for shift optimization (gcc should do that ...)
82 #define NEG_SSR32 NEG_SSR32
83 static inline int32_t NEG_SSR32( int32_t a, int8_t s){
84 __asm__ ("sarl %1, %0\n\t"
85 : "+r" (a)
86 : "ic" ((uint8_t)(-s))
87 );
88 return a;
89 }
90
91 #define NEG_USR32 NEG_USR32
92 static inline uint32_t NEG_USR32(uint32_t a, int8_t s){
93 __asm__ ("shrl %1, %0\n\t"
94 : "+r" (a)
95 : "ic" ((uint8_t)(-s))
96 );
97 return a;
98 }
99
100 #endif /* AVCODEC_X86_MATHOPS_H */