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mt19937ar.h

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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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