61d5ffaf10
issues in these areas:
.h's installed
.hP's installed
-lcurses interaction
files needed in ~/legal for copyleft reasons.
88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
// 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, 675 Mass Ave, Cambridge, MA 02139, 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 unsigned long 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
|