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-rw-r--r--contrib/libg++/libg++/src/HypGeom.h70
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diff --git a/contrib/libg++/libg++/src/HypGeom.h b/contrib/libg++/libg++/src/HypGeom.h
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--- a/contrib/libg++/libg++/src/HypGeom.h
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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 _HyperGeometric_h
-#ifdef __GNUG__
-#pragma interface
-#endif
-#define _HyperGeometric_h
-
-#include <Random.h>
-
-class HyperGeometric: public Random {
-protected:
- double pMean;
- double pVariance;
- double pP;
- void setState();
-
-public:
- HyperGeometric(double mean, double variance, RNG *gen);
-
- double mean();
- double mean(double x);
- double variance();
- double variance(double x);
-
- virtual double operator()();
-};
-
-
-inline void HyperGeometric::setState() {
- double z = pVariance / (pMean * pMean);
- pP = 0.5 * (1.0 - sqrt((z - 1.0) / ( z + 1.0 )));
-}
-
-inline HyperGeometric::HyperGeometric(double mean, double variance, RNG *gen)
-: Random(gen) {
- pMean = mean; pVariance = variance;
- setState();
-}
-
-inline double HyperGeometric::mean() { return pMean; };
-
-inline double HyperGeometric::mean(double x) {
- double t = pMean; pMean = x;
- setState(); return t;
-}
-
-inline double HyperGeometric::variance() { return pVariance; }
-
-inline double HyperGeometric::variance(double x) {
- double t = pVariance; pVariance = x;
- setState(); return t;
-}
-
-#endif