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

56 lines
1.5 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 _Binomial_h
#ifdef __GNUG__
#pragma interface
#endif
#define _Binomial_h 1
#include <Random.h>
class Binomial: public Random {
protected:
int pN;
double pU;
public:
Binomial(int n, double u, RNG *gen);
int n();
int n(int xn);
double u();
double u(int xu);
virtual double operator()();
};
inline Binomial::Binomial(int n, double u, RNG *gen)
: Random(gen){
pN = n; pU = u;
}
inline int Binomial::n() { return pN; }
inline int Binomial::n(int xn) { int tmp = pN; pN = xn; return tmp; }
inline double Binomial::u() { return pU; }
inline double Binomial::u(int xu) { double tmp = pU; pU = xu; return tmp; }
#endif