-
Notifications
You must be signed in to change notification settings - Fork 9
/
mt19937ar.h
116 lines (86 loc) · 4.36 KB
/
mt19937ar.h
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
/*
A C-program for MT19937, with initialization improved 2002/2/10.
Coded by Takuji Nishimura and Makoto Matsumoto.
This is a faster version by taking Shawn Cokus's optimization,
Matthe Bellew's simplification, Isaku Wada's real version.
Before using, initialize the state by using init_genrand(seed)
or init_by_array(init_key, key_length).
Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The names of its contributors may not be used to endorse or promote
products derived from this software without specific prior written
permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Any feedback is very welcome.
http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space)
*/
#ifndef MTRANDH
#define MTRANDH
#include "globaldef.h"
typedef struct MersenneTwister {
unsigned long state[624]; /* the array for the state vector */
int left;
// int initf;
unsigned long *next;
} MersenneTwister;
typedef struct MersenneTwister64 {
std::uint64_t mt[312];
int mti;
} MersenneTwister64;
/* initializes mt[N] with a seed */
void init_genrand(MersenneTwister &rs,unsigned long s);
/* initialize by an array with array-length */
/* init_key is the array for initializing keys */
/* key_length is its length */
/* slight change for C++, 2004/2/26 */
void init_by_array(MersenneTwister &rs,const unsigned long init_key[],const int key_length);
/* generates a random number on [0,0xffffffff]-interval */
unsigned long genrand_int32(MersenneTwister &rs);
/* generates a random number on [0,0x7fffffff]-interval */
long genrand_int31(MersenneTwister &rs);
/* These real versions are due to Isaku Wada, 2002/01/09 added */
/* generates a random number on [0,1]-real-interval */
double genrand_real1(MersenneTwister &rs);
/* generates a random number on [0,1)-real-interval */
double genrand_real2(MersenneTwister &rs);
/* generates a random number on (0,1)-real-interval */
double genrand_real3(MersenneTwister &rs);
/* generates a random number on [0,1) with 53-bit resolution*/
double genrand_res53(MersenneTwister &rs);
/* initializes mt[NN] with a seed */
void init_genrand64(MersenneTwister64& rs,std::uint64_t seed);
/* initialize by an array with array-length */
/* init_key is the array for initializing keys */
/* key_length is its length */
void init_by_array64(MersenneTwister64& rs,const std::uint64_t init_key[],
std::uint64_t key_length);
/* generates a random number on [0, 2^64-1]-interval */
std::uint64_t genrand64_int64(MersenneTwister64& rs);
/* generates a random number on [0, 2^63-1]-interval */
std::int64_t genrand64_int63(MersenneTwister64& rs);
/* generates a random number on [0,1]-real-interval */
double genrand64_real1(MersenneTwister64& rs);
/* generates a random number on [0,1)-real-interval */
double genrand64_real2(MersenneTwister64& rs);
/* generates a random number on (0,1)-real-interval */
double genrand64_real3(MersenneTwister64& rs);
#endif