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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
/* sdsl - succinct data structures library
Copyright (C) 2012 Simon Gog, Matthias Petri
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see http://www.gnu.org/licenses/ .
*/
/*! \file uint128_t.hpp
\brief uint128_t.hpp contains contains the definition of a 128-bit unsigned integer type.
\author Simon Gog, Matthias Petri
*/
#ifndef INCLUDED_SDSL_UINT128
#define INCLUDED_SDSL_UINT128
#include <iostream>
#include "bits.hpp"
namespace sdsl
{
#ifdef MODE_TI
typedef unsigned int uint128_t __attribute__((mode(TI)));
#else
class uint128_t
{
public:
friend std::ostream& operator << (std::ostream&, const uint128_t&);
private:
uint64_t m_lo;
uint64_t m_high;
public:
inline uint128_t(uint64_t lo = 0, uint64_t high = 0) :m_lo(lo) , m_high(high) {}
inline uint128_t(const uint128_t& x) : m_lo(x.m_lo), m_high(x.m_high) {}
inline uint128_t(uint128_t&& x) : m_lo(std::move(x.m_lo)), m_high(std::move(x.m_high)) {}
uint128_t& operator=(const uint128_t& x)
{
m_lo = x.m_lo;
m_high = x.m_high;
return *this;
}
uint128_t& operator=(uint128_t&& x)
{
m_lo = std::move(x.m_lo);
m_high = std::move(x.m_high);
return *this;
}
inline uint8_t popcount() const
{
return (uint8_t) bits::cnt(m_lo) + (uint8_t) bits::cnt(m_high);
}
inline uint16_t hi() const
{
if (m_high == 0ULL) {
return bits::hi(m_lo);
} else {
return bits::hi(m_high) + 64;
}
}
inline uint16_t select(uint32_t i) const
{
uint16_t x = 0;
if ((x = (uint16_t) bits::cnt(m_lo)) >= i) {
return bits::sel(m_lo, i);
}
i -= x;
return bits::sel(m_high, i) + 64;
}
inline uint128_t& operator+=(const uint128_t& x)
{
*this = *this + x;
return *this;
}
inline uint128_t& operator+=(const uint64_t& x)
{
*this = *this + x;
return *this;
}
inline uint128_t operator+(const uint128_t& x) const
{
return uint128_t(m_lo + x.m_lo,m_high + x.m_high + ((m_lo + x.m_lo) < m_lo));
}
inline uint128_t operator+(const uint64_t& x) const
{
return uint128_t(m_lo + x, m_high + ((m_lo + x) < m_lo));
}
inline uint128_t operator-(const uint128_t& x) const
{
return uint128_t(m_lo - x.m_lo, m_high - x.m_high - ((m_lo - x.m_lo)> m_lo));
}
inline uint128_t operator~() const
{
return uint128_t(~m_lo,~m_high);
}
inline uint128_t& operator-=(const uint128_t& x)
{
*this = *this - x;
return *this;
}
inline uint128_t operator|(const uint128_t& x) const
{
return uint128_t(m_lo | x.m_lo, m_high | x.m_high);
}
inline uint128_t operator|(const uint64_t& x) const
{
return uint128_t(m_lo | x, m_high);
}
inline uint128_t& operator|=(const uint128_t& x)
{
m_lo |= x.m_lo; m_high |= x.m_high;
return *this;
}
inline uint128_t operator&(const uint128_t& x) const
{
return uint128_t(m_lo&x.m_lo, m_high&x.m_high);
}
/* // is not needed since we can convert uint128_t to uint64_t
uint64_t operator&(uint64_t x){
return m_lo & x;
}
*/
inline uint128_t operator<<(int x) const
{
if (x < 64) {
auto high = (m_high << x) | (m_lo >> (64 - x));
auto lo = m_lo << x;
return uint128_t(lo,high);
} else {
auto high = m_lo << (x - 64);
return uint128_t(0, high);
}
}
inline uint128_t operator>>(int x) const
{
if (x < 64) {
auto lo = (m_lo >> x) | (m_high << (64 - x));
return uint128_t(lo, m_high >> x);
} else {
auto lo = m_high >> (x - 64);
return uint128_t(lo, 0);
}
}
inline uint128_t& operator=(const uint64_t& x)
{
m_high = 0;
m_lo = x;
return *this;
}
inline bool operator==(const uint128_t& x) const
{
return (m_lo == x.m_lo) and (m_high == x.m_high);
}
inline bool operator==(const uint64_t& x) const
{
return (m_lo == x) and (m_high == 0);
}
inline bool operator!=(const uint128_t& x) const
{
return !(*this == x);
}
inline bool operator>=(const uint128_t& x) const
{
if (m_high != x.m_high) {
return m_high > x.m_high;
} else {
return m_lo >= x.m_lo;
}
}
inline bool operator<=(const uint128_t& x) const
{
if (m_high != x.m_high) {
return m_high < x.m_high;
} else {
return m_lo <= x.m_lo;
}
}
inline bool operator>(const uint128_t& x) const
{
if (m_high != x.m_high) {
return m_high > x.m_high;
} else {
return m_lo > x.m_lo;
}
}
inline bool operator>(const uint64_t& x) const
{
if (m_high > 0) {
return true;
}
return m_lo > x;
}
inline bool operator<(const uint128_t& x) const
{
if (m_high != x.m_high) {
return m_high < x.m_high;
} else {
return m_lo < x.m_lo;
}
}
inline operator uint64_t() const
{
return m_lo;
}
};
#endif
std::ostream& operator<<(std::ostream& os, const uint128_t& x);
} // end namespace
#endif
|
