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 00011 Redistribution and use in source and binary forms, with or without 00012 modification, are permitted provided that the following conditions 00013 are met: 00014 00015 1. Redistributions of source code must retain the above copyright 00016 notice, this list of conditions and the following disclaimer. 00017 00018 2. Redistributions in binary form must reproduce the above copyright 00019 notice, this list of conditions and the following disclaimer in the 00020 documentation and/or other materials provided with the distribution. 00021 00022 3. The names of its contributors may not be used to endorse or promote 00023 products derived from this software without specific prior written 00024 permission. 00025 00026 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00027 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00028 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 00029 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 00030 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00031 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00032 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00033 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00034 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00035 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00036 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00037 00038 00039 Any feedback is very welcome. 00040 http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html 00041 email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space) 00042 */ 00043 00044 #ifndef MT19937AR_H 00045 #define MT19937AR_H 00046 00047 namespace MersenneTwister { 00048 /* initializes with default values */ 00049 void init_default(); 00050 00051 /* initializes mt[N] with a seed */ 00052 void init_genrand(unsigned long s); 00053 00054 /* initialize by an array with array-length */ 00055 /* init_key is the array for initializing keys */ 00056 /* key_length is its length */ 00057 /* slight change for C++, 2004/2/26 */ 00058 void init_by_array(unsigned long init_key[], int key_length); 00059 00060 /* generates a random number on [0,0xffffffff]-interval */ 00061 unsigned long genrand_int32(void); 00062 00063 /* generates a random number on [0,0x7fffffff]-interval */ 00064 long genrand_int31(void); 00065 00066 /* generates a random number on [0,1]-real-interval */ 00067 double genrand_real1(void); 00068 00069 /* generates a random number on [0,1)-real-interval */ 00070 double genrand_real2(void); 00071 00072 /* generates a random number on (0,1)-real-interval */ 00073 double genrand_real3(void); 00074 00075 /* generates a random number on [0,1) with 53-bit resolution*/ 00076 double genrand_res53(void); 00077 00078 /* These real versions are due to Isaku Wada, 2002/01/09 added */ 00079 } 00080 00081 #endif