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// This may look like C code, but it is really -*- C++ -*-
/*
Copyright (C) 1988 Free Software Foundation
written by Dirk Grunwald (grunwald@cs.uiuc.edu)
This file is part of the GNU C++ Library. This library is free
software; you can redistribute it and/or modify it under the terms of
the GNU Library General Public License as published by the Free
Software Foundation; either version 2 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _MLCG_h
#define _MLCG_h 1
#ifdef __GNUG__
#pragma interface
#endif
#include <RNG.h>
#include <math.h>
//
// Multiplicative Linear Conguential Generator
//
class MLCG : public RNG {
_G_int32_t initialSeedOne;
_G_int32_t initialSeedTwo;
_G_int32_t seedOne;
_G_int32_t seedTwo;
protected:
public:
MLCG(_G_int32_t seed1 = 0, _G_int32_t seed2 = 1);
//
// Return a long-words word of random bits
//
virtual _G_uint32_t asLong();
virtual void reset();
_G_int32_t seed1();
void seed1(_G_int32_t);
_G_int32_t seed2();
void seed2(_G_int32_t);
void reseed(_G_int32_t, _G_int32_t);
};
inline _G_int32_t
MLCG::seed1()
{
return(seedOne);
}
inline void
MLCG::seed1(_G_int32_t s)
{
initialSeedOne = s;
reset();
}
inline _G_int32_t
MLCG::seed2()
{
return(seedTwo);
}
inline void
MLCG::seed2(_G_int32_t s)
{
initialSeedTwo = s;
reset();
}
inline void
MLCG::reseed(_G_int32_t s1, _G_int32_t s2)
{
initialSeedOne = s1;
initialSeedTwo = s2;
reset();
}
#endif
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