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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
| | /* uint64_t-like operations that work even on hosts lacking uint64_t
Copyright (C) 2006, 2009-2021 Free Software Foundation, Inc.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
#include <stdint.h>
#ifndef _GL_INLINE_HEADER_BEGIN
#error "Please include config.h first."
#endif
_GL_INLINE_HEADER_BEGIN
#ifndef _GL_U64_INLINE
# define _GL_U64_INLINE _GL_INLINE
#endif
/* Return X rotated left by N bits, where 0 < N < 64. */
#define u64rol(x, n) u64or (u64shl (x, n), u64shr (x, 64 - n))
#ifdef UINT64_MAX
/* Native implementations are trivial. See below for comments on what
these operations do. */
typedef uint64_t u64;
# define u64hilo(hi, lo) ((u64) (((u64) (hi) << 32) + (lo)))
# define u64init(hi, lo) u64hilo (hi, lo)
# define u64lo(x) ((u64) (x))
# define u64size(x) u64lo (x)
# define u64lt(x, y) ((x) < (y))
# define u64and(x, y) ((x) & (y))
# define u64or(x, y) ((x) | (y))
# define u64xor(x, y) ((x) ^ (y))
# define u64plus(x, y) ((x) + (y))
# define u64shl(x, n) ((x) << (n))
# define u64shr(x, n) ((x) >> (n))
#else
/* u64 is a 64-bit unsigned integer value.
u64init (HI, LO), is like u64hilo (HI, LO), but for use in
initializer contexts. */
# ifdef WORDS_BIGENDIAN
typedef struct { uint32_t hi, lo; } u64;
# define u64init(hi, lo) { hi, lo }
# else
typedef struct { uint32_t lo, hi; } u64;
# define u64init(hi, lo) { lo, hi }
# endif
/* Given the high and low-order 32-bit quantities HI and LO, return a u64
value representing (HI << 32) + LO. */
_GL_U64_INLINE u64
u64hilo (uint32_t hi, uint32_t lo)
{
u64 r;
r.hi = hi;
r.lo = lo;
return r;
}
/* Return a u64 value representing LO. */
_GL_U64_INLINE u64
u64lo (uint32_t lo)
{
u64 r;
r.hi = 0;
r.lo = lo;
return r;
}
/* Return a u64 value representing SIZE. */
_GL_U64_INLINE u64
u64size (size_t size)
{
u64 r;
r.hi = size >> 31 >> 1;
r.lo = size;
return r;
}
/* Return X < Y. */
_GL_U64_INLINE int
u64lt (u64 x, u64 y)
{
return x.hi < y.hi || (x.hi == y.hi && x.lo < y.lo);
}
/* Return X & Y. */
_GL_U64_INLINE u64
u64and (u64 x, u64 y)
{
u64 r;
r.hi = x.hi & y.hi;
r.lo = x.lo & y.lo;
return r;
}
/* Return X | Y. */
_GL_U64_INLINE u64
u64or (u64 x, u64 y)
{
u64 r;
r.hi = x.hi | y.hi;
r.lo = x.lo | y.lo;
return r;
}
/* Return X ^ Y. */
_GL_U64_INLINE u64
u64xor (u64 x, u64 y)
{
u64 r;
r.hi = x.hi ^ y.hi;
r.lo = x.lo ^ y.lo;
return r;
}
/* Return X + Y. */
_GL_U64_INLINE u64
u64plus (u64 x, u64 y)
{
u64 r;
r.lo = x.lo + y.lo;
r.hi = x.hi + y.hi + (r.lo < x.lo);
return r;
}
/* Return X << N. */
_GL_U64_INLINE u64
u64shl (u64 x, int n)
{
u64 r;
if (n < 32)
{
r.hi = (x.hi << n) | (x.lo >> (32 - n));
r.lo = x.lo << n;
}
else
{
r.hi = x.lo << (n - 32);
r.lo = 0;
}
return r;
}
/* Return X >> N. */
_GL_U64_INLINE u64
u64shr (u64 x, int n)
{
u64 r;
if (n < 32)
{
r.hi = x.hi >> n;
r.lo = (x.hi << (32 - n)) | (x.lo >> n);
}
else
{
r.hi = 0;
r.lo = x.hi >> (n - 32);
}
return r;
}
#endif
_GL_INLINE_HEADER_END
|