aboutsummaryrefslogtreecommitdiffstats
path: root/util/generic/bitops.cpp
blob: e719b160402ae8d6f892663b1da1c6ac1fd3fef7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
#include "bitops.h"

namespace NBitOps {
    namespace NPrivate {
        const ui64 WORD_MASK[] = {
            0x0000000000000000ULL,
            0x0000000000000001ULL,
            0x0000000000000003ULL,
            0x0000000000000007ULL,
            0x000000000000000FULL,
            0x000000000000001FULL,
            0x000000000000003FULL,
            0x000000000000007FULL,
            0x00000000000000FFULL,
            0x00000000000001FFULL,
            0x00000000000003FFULL,
            0x00000000000007FFULL,
            0x0000000000000FFFULL,
            0x0000000000001FFFULL,
            0x0000000000003FFFULL,
            0x0000000000007FFFULL,
            0x000000000000FFFFULL,
            0x000000000001FFFFULL,
            0x000000000003FFFFULL,
            0x000000000007FFFFULL,
            0x00000000000FFFFFULL,
            0x00000000001FFFFFULL,
            0x00000000003FFFFFULL,
            0x00000000007FFFFFULL,
            0x0000000000FFFFFFULL,
            0x0000000001FFFFFFULL,
            0x0000000003FFFFFFULL,
            0x0000000007FFFFFFULL,
            0x000000000FFFFFFFULL,
            0x000000001FFFFFFFULL,
            0x000000003FFFFFFFULL,
            0x000000007FFFFFFFULL,
            0x00000000FFFFFFFFULL,
            0x00000001FFFFFFFFULL,
            0x00000003FFFFFFFFULL,
            0x00000007FFFFFFFFULL,
            0x0000000FFFFFFFFFULL,
            0x0000001FFFFFFFFFULL,
            0x0000003FFFFFFFFFULL,
            0x0000007FFFFFFFFFULL,
            0x000000FFFFFFFFFFULL,
            0x000001FFFFFFFFFFULL,
            0x000003FFFFFFFFFFULL,
            0x000007FFFFFFFFFFULL,
            0x00000FFFFFFFFFFFULL,
            0x00001FFFFFFFFFFFULL,
            0x00003FFFFFFFFFFFULL,
            0x00007FFFFFFFFFFFULL,
            0x0000FFFFFFFFFFFFULL,
            0x0001FFFFFFFFFFFFULL,
            0x0003FFFFFFFFFFFFULL,
            0x0007FFFFFFFFFFFFULL,
            0x000FFFFFFFFFFFFFULL,
            0x001FFFFFFFFFFFFFULL,
            0x003FFFFFFFFFFFFFULL,
            0x007FFFFFFFFFFFFFULL,
            0x00FFFFFFFFFFFFFFULL,
            0x01FFFFFFFFFFFFFFULL,
            0x03FFFFFFFFFFFFFFULL,
            0x07FFFFFFFFFFFFFFULL,
            0x0FFFFFFFFFFFFFFFULL,
            0x1FFFFFFFFFFFFFFFULL,
            0x3FFFFFFFFFFFFFFFULL,
            0x7FFFFFFFFFFFFFFFULL,
            0xFFFFFFFFFFFFFFFFULL,
        };

        const ui64 INVERSE_WORD_MASK[] = {
            ~0x0000000000000000ULL,
            ~0x0000000000000001ULL,
            ~0x0000000000000003ULL,
            ~0x0000000000000007ULL,
            ~0x000000000000000FULL,
            ~0x000000000000001FULL,
            ~0x000000000000003FULL,
            ~0x000000000000007FULL,
            ~0x00000000000000FFULL,
            ~0x00000000000001FFULL,
            ~0x00000000000003FFULL,
            ~0x00000000000007FFULL,
            ~0x0000000000000FFFULL,
            ~0x0000000000001FFFULL,
            ~0x0000000000003FFFULL,
            ~0x0000000000007FFFULL,
            ~0x000000000000FFFFULL,
            ~0x000000000001FFFFULL,
            ~0x000000000003FFFFULL,
            ~0x000000000007FFFFULL,
            ~0x00000000000FFFFFULL,
            ~0x00000000001FFFFFULL,
            ~0x00000000003FFFFFULL,
            ~0x00000000007FFFFFULL,
            ~0x0000000000FFFFFFULL,
            ~0x0000000001FFFFFFULL,
            ~0x0000000003FFFFFFULL,
            ~0x0000000007FFFFFFULL,
            ~0x000000000FFFFFFFULL,
            ~0x000000001FFFFFFFULL,
            ~0x000000003FFFFFFFULL,
            ~0x000000007FFFFFFFULL,
            ~0x00000000FFFFFFFFULL,
            ~0x00000001FFFFFFFFULL,
            ~0x00000003FFFFFFFFULL,
            ~0x00000007FFFFFFFFULL,
            ~0x0000000FFFFFFFFFULL,
            ~0x0000001FFFFFFFFFULL,
            ~0x0000003FFFFFFFFFULL,
            ~0x0000007FFFFFFFFFULL,
            ~0x000000FFFFFFFFFFULL,
            ~0x000001FFFFFFFFFFULL,
            ~0x000003FFFFFFFFFFULL,
            ~0x000007FFFFFFFFFFULL,
            ~0x00000FFFFFFFFFFFULL,
            ~0x00001FFFFFFFFFFFULL,
            ~0x00003FFFFFFFFFFFULL,
            ~0x00007FFFFFFFFFFFULL,
            ~0x0000FFFFFFFFFFFFULL,
            ~0x0001FFFFFFFFFFFFULL,
            ~0x0003FFFFFFFFFFFFULL,
            ~0x0007FFFFFFFFFFFFULL,
            ~0x000FFFFFFFFFFFFFULL,
            ~0x001FFFFFFFFFFFFFULL,
            ~0x003FFFFFFFFFFFFFULL,
            ~0x007FFFFFFFFFFFFFULL,
            ~0x00FFFFFFFFFFFFFFULL,
            ~0x01FFFFFFFFFFFFFFULL,
            ~0x03FFFFFFFFFFFFFFULL,
            ~0x07FFFFFFFFFFFFFFULL,
            ~0x0FFFFFFFFFFFFFFFULL,
            ~0x1FFFFFFFFFFFFFFFULL,
            ~0x3FFFFFFFFFFFFFFFULL,
            ~0x7FFFFFFFFFFFFFFFULL,
            ~0xFFFFFFFFFFFFFFFFULL,
        };
    } // namespace NPrivate
} // namespace NBitOps