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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, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ $Id: Normal.h,v 1.1 1995/10/18 08:38:17 deraadt Exp $
+*/
+
+#ifndef _Normal_h
+#ifdef __GNUG__
+#pragma interface
+#endif
+#define _Normal_h
+
+#include <Random.h>
+
+class Normal: public Random {
+ char haveCachedNormal;
+ double cachedNormal;
+
+protected:
+ double pMean;
+ double pVariance;
+ double pStdDev;
+
+public:
+ Normal(double xmean, double xvariance, RNG *gen);
+ double mean();
+ double mean(double x);
+ double variance();
+ double variance(double x);
+ virtual double operator()();
+};
+
+
+inline Normal::Normal(double xmean, double xvariance, RNG *gen)
+: Random(gen) {
+ pMean = xmean;
+ pVariance = xvariance;
+ pStdDev = sqrt(pVariance);
+ haveCachedNormal = 0;
+}
+
+inline double Normal::mean() { return pMean; };
+inline double Normal::mean(double x) {
+ double t=pMean; pMean = x;
+ return t;
+}
+
+inline double Normal::variance() { return pVariance; }
+inline double Normal::variance(double x) {
+ double t=pVariance; pVariance = x;
+ pStdDev = sqrt(pVariance);
+ return t;
+};
+
+#endif