freebsd-dev/gnu/lib/libg++/include/Uniform.h
1995-05-30 05:05:38 +00:00

72 lines
1.8 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 _Uniform_h
#ifdef __GNUG__
#pragma interface
#endif
#define _Uniform_h 1
#include <Random.h>
//
// The interval [lo..hi]
//
class Uniform: public Random {
double pLow;
double pHigh;
double delta;
public:
Uniform(double low, double high, RNG *gen);
double low();
double low(double x);
double high();
double high(double x);
virtual double operator()();
};
inline Uniform::Uniform(double low, double high, RNG *gen) : Random(gen)
{
pLow = (low < high) ? low : high;
pHigh = (low < high) ? high : low;
delta = pHigh - pLow;
}
inline double Uniform::low() { return pLow; }
inline double Uniform::low(double x) {
double tmp = pLow;
pLow = x;
delta = pHigh - pLow;
return tmp;
}
inline double Uniform::high() { return pHigh; }
inline double Uniform::high(double x) {
double tmp = pHigh;
pHigh = x;
delta = pHigh - pLow;
return tmp;
}
#endif