72 lines
1.8 KiB
C++
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
|