Mercurial > repos > rhope
comparison mt19937ar.h @ 0:76568becd6d6
Rhope Alpha 2a source import
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 28 Apr 2009 23:06:07 +0000 |
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1 /* | |
2 A C-program for MT19937, with initialization improved 2002/1/26. | |
3 Coded by Takuji Nishimura and Makoto Matsumoto. | |
4 | |
5 Before using, initialize the state by using init_genrand(seed) | |
6 or init_by_array(init_key, key_length). | |
7 | |
8 Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, | |
9 All rights reserved. | |
10 Copyright (C) 2005, Mutsuo Saito | |
11 All rights reserved. | |
12 | |
13 Redistribution and use in source and binary forms, with or without | |
14 modification, are permitted provided that the following conditions | |
15 are met: | |
16 | |
17 1. Redistributions of source code must retain the above copyright | |
18 notice, this list of conditions and the following disclaimer. | |
19 | |
20 2. Redistributions in binary form must reproduce the above copyright | |
21 notice, this list of conditions and the following disclaimer in the | |
22 documentation and/or other materials provided with the distribution. | |
23 | |
24 3. The names of its contributors may not be used to endorse or promote | |
25 products derived from this software without specific prior written | |
26 permission. | |
27 | |
28 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
29 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
30 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
31 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
32 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
33 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
34 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
35 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
36 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
37 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
38 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
39 | |
40 | |
41 Any feedback is very welcome. | |
42 http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html | |
43 email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space) | |
44 */ | |
45 | |
46 /* initializes mt[N] with a seed */ | |
47 void init_genrand(unsigned long s); | |
48 | |
49 /* initialize by an array with array-length */ | |
50 /* init_key is the array for initializing keys */ | |
51 /* key_length is its length */ | |
52 /* slight change for C++, 2004/2/26 */ | |
53 void init_by_array(unsigned long init_key[], int key_length); | |
54 | |
55 /* generates a random number on [0,0xffffffff]-interval */ | |
56 unsigned long genrand_int32(void); | |
57 | |
58 /* generates a random number on [0,0x7fffffff]-interval */ | |
59 long genrand_int31(void); | |
60 | |
61 /* These real versions are due to Isaku Wada, 2002/01/09 added */ | |
62 /* generates a random number on [0,1]-real-interval */ | |
63 double genrand_real1(void); | |
64 | |
65 /* generates a random number on [0,1)-real-interval */ | |
66 double genrand_real2(void); | |
67 | |
68 /* generates a random number on (0,1)-real-interval */ | |
69 double genrand_real3(void); | |
70 | |
71 /* generates a random number on [0,1) with 53-bit resolution*/ | |
72 double genrand_res53(void); |