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<H2><A NAME="SECTION009310000000000000000">
B.3.1 Mersenne Twister</A>
</H2>

<P>
The <tt class="module">_random</tt> module includes code based on a download from
<a class="url" href="http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html">http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html</a>.
The following are the verbatim comments from the original code:

<P>
<div class="verbatim"><pre>
A C-program for MT19937, with initialization improved 2002/1/26.
Coded by Takuji Nishimura and Makoto Matsumoto.

Before using, initialize the state by using init_genrand(seed)
or init_by_array(init_key, key_length).

Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

 1. Redistributions of source code must retain the above copyright
    notice, this list of conditions and the following disclaimer.

 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in the
    documentation and/or other materials provided with the distribution.

 3. The names of its contributors may not be used to endorse or promote
    products derived from this software without specific prior written
    permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


Any feedback is very welcome.
http://www.math.keio.ac.jp/matumoto/emt.html
email: matumoto@math.keio.ac.jp
</pre></div>

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	52
	53	<H2><A NAME="SECTION009310000000000000000">
	54	B.3.1 Mersenne Twister</A>
	55	</H2>
	56
	57	<P>
	58	The <tt class="module">_random</tt> module includes code based on a download from
	59	<a class="url" href="http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html">http://www.math.keio.ac.jp/~matumoto/MT2002/emt19937ar.html</a>.
	60	The following are the verbatim comments from the original code:
	61
	62	<P>
	63	<div class="verbatim"><pre>
	64	A C-program for MT19937, with initialization improved 2002/1/26.
65	Coded by Takuji Nishimura and Makoto Matsumoto.
66
67	Before using, initialize the state by using init_genrand(seed)
68	or init_by_array(init_key, key_length).
69
70	Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
71	All rights reserved.
72
73	Redistribution and use in source and binary forms, with or without
74	modification, are permitted provided that the following conditions
75	are met:
76
77	1. Redistributions of source code must retain the above copyright
78	notice, this list of conditions and the following disclaimer.
79
80	2. Redistributions in binary form must reproduce the above copyright
81	notice, this list of conditions and the following disclaimer in the
82	documentation and/or other materials provided with the distribution.
83
84	3. The names of its contributors may not be used to endorse or promote
85	products derived from this software without specific prior written
86	permission.
87
88	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
89	"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
90	LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
91	A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
92	CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
93	EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
94	PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
95	PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
96	LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
97	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
98	SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
99
100
101	Any feedback is very welcome.
102	http://www.math.keio.ac.jp/matumoto/emt.html
103	email: matumoto@math.keio.ac.jp
104	</pre></div>
105
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