65 lines
2.6 KiB
C
65 lines
2.6 KiB
C
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#pragma once
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#pragma warning( disable : 4005 )
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#include <stdint.h>
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#pragma warning( default : 4005 )
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/* Period parameters */
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#define N 624
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#define M 397
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#define MATRIX_A 0x9908b0df /* constant vector a */
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#define UPPER_MASK 0x80000000 /* most significant w-r bits */
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#define LOWER_MASK 0x7fffffff /* least significant r bits */
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/* Tempering parameters */
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#define TEMPERING_MASK_B 0x9d2c5680
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#define TEMPERING_MASK_C 0xefc60000
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#define TEMPERING_SHIFT_U(y) (y >> 11)
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#define TEMPERING_SHIFT_S(y) (y << 7)
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#define TEMPERING_SHIFT_T(y) (y << 15)
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#define TEMPERING_SHIFT_L(y) (y >> 18)
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class CMT19937
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{
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public:
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uint32_t GenRand();
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CMT19937();
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virtual ~CMT19937();
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void SGenRand(uint32_t seed);
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private:
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uint32_t mag01[2];
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int mti;
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uint32_t mt[N];
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};
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// C++ encapsulated modified from:
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//
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/* A C-program for MT19937: Integer version */
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/* genrand() generates one pseudorandom unsigned integer (32bit) */
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/* which is uniformly distributed among 0 to 2^32-1 for each */
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/* call. sgenrand(seed) set initial values to the working area */
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/* of 624 words. Before genrand(), sgenrand(seed) must be */
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/* called once. (seed is any 32-bit integer except for 0). */
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/* Coded by Takuji Nishimura, considering the suggestions by */
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/* Topher Cooper and Marc Rieffel in July-Aug. 1997. */
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/* This library is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU Library General Public */
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/* License as published by the Free Software Foundation; either */
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/* version 2 of the License, or (at your option) any later */
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/* version. */
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/* This library is distributed in the hope that it will be useful, */
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/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. */
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/* See the GNU Library General Public License for more details. */
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/* You should have received a copy of the GNU Library General */
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/* Public License along with this library; if not, write to the */
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/* Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA */
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/* 02111-1307 USA */
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/* Copyright (C) 1997 Makoto Matsumoto and Takuji Nishimura. */
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/* Any feedback is very welcome. For any question, comments, */
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/* see http://www.math.keio.ac.jp/matumoto/emt.html or email */
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/* matumoto@math.keio.ac.jp */
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