PLplot  5.10.0
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros
mt19937ar.h
Go to the documentation of this file.
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 );