/usr/include/linbox/randiter/mersenne-twister.h is in liblinbox-dev 1.3.2-1.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | /* linbox/randiter/mersenne-twister.h
* Copyright (C) 2002 Bradford Hovinen
*
* Written by Bradford Hovinen <hovinen@cis.udel.edu>
*
* ------------------------------------
*
* ========LICENCE========
* This file is part of the library LinBox.
*
* LinBox is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
* ------------------------------------
*
* Header file for implementation of the Mersenne twister pseudo-random number
* generator, crated by Makoto Matsumoto and Takuji Nishimura. Further
* information on the Mersenne Twister can be found at
* http://www.math.keio.ac.jp/~matsumoto/emt.html [ dead link. -bds 2007feb]
*
* This forms the basic underlying algorithm for most psuedo-random number
* generation in LinBox.
*
* N.B. This module is tested in test-modular under the random number
* generator tests.
*/
#ifndef __LINBOX_mersenne_twister_H
#define __LINBOX_mersenne_twister_H
#include <vector>
#include "linbox/integer.h"
namespace LinBox
{
class MersenneTwister {
public:
MersenneTwister (uint32_t seed = 0);
uint32_t reload (); // public?
// random in [0..2^32) ?
uint32_t randomInt ();
uint32_t randomInt () const
{ return const_cast<MersenneTwister&>(*this).randomInt();}
// random in [start..end).
uint32_t randomIntRange (uint32_t start, uint32_t end);
uint32_t randomIntRange (uint32_t start, uint32_t end) const
{ return const_cast<MersenneTwister&>(*this).randomIntRange(start,end); }
// random in [0..1] in some sense ?
double randomDouble ();
double randomDouble () const
{ return const_cast<MersenneTwister&>(*this).randomDouble(); }
// random in [start..end] in some sense ?
double randomDoubleRange (double start, double end)
{ return randomDouble () * (end - start) + start; }
double randomDoubleRange (double start, double end) const
{ return const_cast<MersenneTwister&>(*this).randomDoubleRange(start,end); }
void setSeed (uint32_t seed);
private:
std::vector<uint32_t> _state;
std::vector<uint32_t>::iterator _next;
int _left;
};
}
#ifdef LinBoxSrcOnly
#include "linbox/randiter/mersenne-twister.C"
#endif
#endif // __LINBOX_mersenne_twister_H
// vim:sts=8:sw=8:ts=8:noet:sr:cino=>s,f0,{0,g0,(0,:0,t0,+0,=s
// Local Variables:
// mode: C++
// tab-width: 8
// indent-tabs-mode: nil
// c-basic-offset: 8
// End:
|