PLplot 5.9.6
mt19937ar.h
00001 /*
00002  * A C-program for MT19937, with initialization improved 2002/1/26.
00003  * Coded by Takuji Nishimura and Makoto Matsumoto.
00004  *
00005  * Before using, initialize the state by using init_genrand(seed)
00006  * or init_by_array(init_key, key_length).
00007  *
00008  * Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
00009  * All rights reserved.
00010  * Copyright (C) 2005, Mutsuo Saito
00011  * All rights reserved.
00012  *
00013  * Redistribution and use in source and binary forms, with or without
00014  * modification, are permitted provided that the following conditions
00015  * are met:
00016  *
00017  *   1. Redistributions of source code must retain the above copyright
00018  *      notice, this list of conditions and the following disclaimer.
00019  *
00020  *   2. Redistributions in binary form must reproduce the above copyright
00021  *      notice, this list of conditions and the following disclaimer in the
00022  *      documentation and/or other materials provided with the distribution.
00023  *
00024  *   3. The names of its contributors may not be used to endorse or promote
00025  *      products derived from this software without specific prior written
00026  *      permission.
00027  *
00028  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00029  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00030  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
00031  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
00032  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00033  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00034  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00035  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00036  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00037  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00038  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00039  *
00040  *
00041  * Any feedback is very welcome.
00042  * http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
00043  * email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space)
00044  */
00045 
00046 /* initializes mt[N] with a seed */
00047 void init_genrand( unsigned long s );
00048 
00049 /* initialize by an array with array-length */
00050 /* init_key is the array for initializing keys */
00051 /* key_length is its length */
00052 /* slight change for C++, 2004/2/26 */
00053 void init_by_array( unsigned long init_key[], int key_length );
00054 
00055 /* generates a random number on [0,0xffffffff]-interval */
00056 unsigned long genrand_int32( void );
00057 
00058 /* generates a random number on [0,0x7fffffff]-interval */
00059 long genrand_int31( void );
00060 
00061 /* These real versions are due to Isaku Wada, 2002/01/09 added */
00062 /* generates a random number on [0,1]-real-interval */
00063 double genrand_real1( void );
00064 
00065 /* generates a random number on [0,1)-real-interval */
00066 double genrand_real2( void );
00067 
00068 /* generates a random number on (0,1)-real-interval */
00069 double genrand_real3( void );
00070 
00071 /* generates a random number on [0,1) with 53-bit resolution*/
00072 double genrand_res53( void );
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