1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 * Ali Saidi
30 */
31
32#ifndef __BASE_RANDOM_HH__
33#define __BASE_RANDOM_HH__
34
35#include <ios>
36#include <string>
37
38#include "base/range.hh"
| 1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 * Ali Saidi
30 */
31
32#ifndef __BASE_RANDOM_HH__
33#define __BASE_RANDOM_HH__
34
35#include <ios>
36#include <string>
37
38#include "base/range.hh"
|
39#include "sim/host.hh"
| 39#include "base/types.hh"
|
40
41class Checkpoint;
42
43class Random
44{
45 protected:
46 static const int N = 624;
47 static const int M = 397;
48 static const uint32_t MATRIX_A = (uint32_t)0x9908b0df;
49 static const uint32_t UPPER_MASK = (uint32_t)0x80000000;
50 static const uint32_t LOWER_MASK = (uint32_t)0x7fffffff;
51
52 uint32_t mt[N];
53 int mti;
54
55 uint32_t genrand();
56 uint32_t genrand(uint32_t max);
57 uint64_t genrand(uint64_t max);
58
59 void
60 _random(int8_t &value)
61 {
62 value = genrand() & (int8_t)-1;
63 }
64
65 void
66 _random(int16_t &value)
67 {
68 value = genrand() & (int16_t)-1;
69 }
70
71 void
72 _random(int32_t &value)
73 {
74 value = (int32_t)genrand();
75 }
76
77 void
78 _random(int64_t &value)
79 {
80 value = (int64_t)genrand() << 32 | (int64_t)genrand();
81 }
82
83 void
84 _random(uint8_t &value)
85 {
86 value = genrand() & (uint8_t)-1;
87 }
88
89 void
90 _random(uint16_t &value)
91 {
92 value = genrand() & (uint16_t)-1;
93 }
94
95 void
96 _random(uint32_t &value)
97 {
98 value = genrand();
99 }
100
101 void
102 _random(uint64_t &value)
103 {
104 value = (uint64_t)genrand() << 32 | (uint64_t)genrand();
105 }
106
107 // [0,1]
108 void
109 _random(float &value)
110 {
111 // ieee floats have 23 bits of mantissa
112 value = (genrand() >> 9) / 8388608.0;
113 }
114
115 // [0,1]
116 void
117 _random(double &value)
118 {
119 double number = genrand() * 2097152.0 + (genrand() >> 11);
120 value = number / 9007199254740992.0;
121 }
122
123
124 // Range based versions of the random number generator
125 int8_t
126 _random(int8_t min, int8_t max)
127 {
128 uint32_t diff = max - min;
129 return static_cast<int8_t>(min + genrand(diff));
130 }
131
132 int16_t
133 _random(int16_t min, int16_t max)
134 {
135 uint32_t diff = max - min;
136 return static_cast<int16_t>(min + genrand(diff));
137 }
138
139 int32_t
140 _random(int32_t min, int32_t max)
141 {
142 uint32_t diff = max - min;
143 return static_cast<int32_t>(min + genrand(diff));
144 }
145
146 int64_t
147 _random(int64_t min, int64_t max)
148 {
149 uint64_t diff = max - min;
150 return static_cast<int64_t>(min + genrand(diff));
151 }
152
153 uint8_t
154 _random(uint8_t min, uint8_t max)
155 {
156 uint32_t diff = max - min;
157 return static_cast<uint8_t>(min + genrand(diff));
158 }
159
160 uint16_t
161 _random(uint16_t min, uint16_t max)
162 {
163 uint32_t diff = max - min;
164 return static_cast<uint16_t>(min + genrand(diff));
165 }
166
167 uint32_t
168 _random(uint32_t min, uint32_t max)
169 {
170 uint32_t diff = max - min;
171 return static_cast<uint32_t>(min + genrand(diff));
172 }
173
174 uint64_t
175 _random(uint64_t min, uint64_t max)
176 {
177 uint64_t diff = max - min;
178 return static_cast<uint64_t>(min + genrand(diff));
179 }
180
181 public:
182 Random();
183 Random(uint32_t s);
184 Random(uint32_t init_key[], int key_length);
185 ~Random();
186
187 void init(uint32_t s);
188 void init(uint32_t init_key[], int key_length);
189
190 template <typename T>
191 T
192 random()
193 {
194 T value;
195 _random(value);
196 return value;
197 }
198
199 template <typename T>
200 T
201 random(T min, T max)
202 {
203 return _random(min, max);
204 }
205
206 template <typename T>
207 T
208 random(const Range<T> &range)
209 {
210 return _random(range.start, range.end);
211 }
212
213 // [0,1]
214 double
215 gen_real1()
216 {
217 return genrand() / 4294967296.0;
218 }
219
220 // [0,1)
221 double
222 gen_real2()
223 {
224 return genrand() / 4294967295.0;
225 }
226
227 // (0,1)
228 double
229 gen_real3()
230 {
231 return ((double)genrand() + 0.5) / 4294967296.0;
232 }
233
234 public:
235 void serialize(const std::string &base, std::ostream &os);
236 void unserialize(const std::string &base, Checkpoint *cp,
237 const std::string §ion);
238};
239
240extern Random random_mt;
241
242#endif // __BASE_RANDOM_HH__
| 40
41class Checkpoint;
42
43class Random
44{
45 protected:
46 static const int N = 624;
47 static const int M = 397;
48 static const uint32_t MATRIX_A = (uint32_t)0x9908b0df;
49 static const uint32_t UPPER_MASK = (uint32_t)0x80000000;
50 static const uint32_t LOWER_MASK = (uint32_t)0x7fffffff;
51
52 uint32_t mt[N];
53 int mti;
54
55 uint32_t genrand();
56 uint32_t genrand(uint32_t max);
57 uint64_t genrand(uint64_t max);
58
59 void
60 _random(int8_t &value)
61 {
62 value = genrand() & (int8_t)-1;
63 }
64
65 void
66 _random(int16_t &value)
67 {
68 value = genrand() & (int16_t)-1;
69 }
70
71 void
72 _random(int32_t &value)
73 {
74 value = (int32_t)genrand();
75 }
76
77 void
78 _random(int64_t &value)
79 {
80 value = (int64_t)genrand() << 32 | (int64_t)genrand();
81 }
82
83 void
84 _random(uint8_t &value)
85 {
86 value = genrand() & (uint8_t)-1;
87 }
88
89 void
90 _random(uint16_t &value)
91 {
92 value = genrand() & (uint16_t)-1;
93 }
94
95 void
96 _random(uint32_t &value)
97 {
98 value = genrand();
99 }
100
101 void
102 _random(uint64_t &value)
103 {
104 value = (uint64_t)genrand() << 32 | (uint64_t)genrand();
105 }
106
107 // [0,1]
108 void
109 _random(float &value)
110 {
111 // ieee floats have 23 bits of mantissa
112 value = (genrand() >> 9) / 8388608.0;
113 }
114
115 // [0,1]
116 void
117 _random(double &value)
118 {
119 double number = genrand() * 2097152.0 + (genrand() >> 11);
120 value = number / 9007199254740992.0;
121 }
122
123
124 // Range based versions of the random number generator
125 int8_t
126 _random(int8_t min, int8_t max)
127 {
128 uint32_t diff = max - min;
129 return static_cast<int8_t>(min + genrand(diff));
130 }
131
132 int16_t
133 _random(int16_t min, int16_t max)
134 {
135 uint32_t diff = max - min;
136 return static_cast<int16_t>(min + genrand(diff));
137 }
138
139 int32_t
140 _random(int32_t min, int32_t max)
141 {
142 uint32_t diff = max - min;
143 return static_cast<int32_t>(min + genrand(diff));
144 }
145
146 int64_t
147 _random(int64_t min, int64_t max)
148 {
149 uint64_t diff = max - min;
150 return static_cast<int64_t>(min + genrand(diff));
151 }
152
153 uint8_t
154 _random(uint8_t min, uint8_t max)
155 {
156 uint32_t diff = max - min;
157 return static_cast<uint8_t>(min + genrand(diff));
158 }
159
160 uint16_t
161 _random(uint16_t min, uint16_t max)
162 {
163 uint32_t diff = max - min;
164 return static_cast<uint16_t>(min + genrand(diff));
165 }
166
167 uint32_t
168 _random(uint32_t min, uint32_t max)
169 {
170 uint32_t diff = max - min;
171 return static_cast<uint32_t>(min + genrand(diff));
172 }
173
174 uint64_t
175 _random(uint64_t min, uint64_t max)
176 {
177 uint64_t diff = max - min;
178 return static_cast<uint64_t>(min + genrand(diff));
179 }
180
181 public:
182 Random();
183 Random(uint32_t s);
184 Random(uint32_t init_key[], int key_length);
185 ~Random();
186
187 void init(uint32_t s);
188 void init(uint32_t init_key[], int key_length);
189
190 template <typename T>
191 T
192 random()
193 {
194 T value;
195 _random(value);
196 return value;
197 }
198
199 template <typename T>
200 T
201 random(T min, T max)
202 {
203 return _random(min, max);
204 }
205
206 template <typename T>
207 T
208 random(const Range<T> &range)
209 {
210 return _random(range.start, range.end);
211 }
212
213 // [0,1]
214 double
215 gen_real1()
216 {
217 return genrand() / 4294967296.0;
218 }
219
220 // [0,1)
221 double
222 gen_real2()
223 {
224 return genrand() / 4294967295.0;
225 }
226
227 // (0,1)
228 double
229 gen_real3()
230 {
231 return ((double)genrand() + 0.5) / 4294967296.0;
232 }
233
234 public:
235 void serialize(const std::string &base, std::ostream &os);
236 void unserialize(const std::string &base, Checkpoint *cp,
237 const std::string §ion);
238};
239
240extern Random random_mt;
241
242#endif // __BASE_RANDOM_HH__
|