summaryrefslogtreecommitdiffstats
path: root/gnu/lib/libg++/include/NegExp.h
diff options
context:
space:
mode:
Diffstat (limited to 'gnu/lib/libg++/include/NegExp.h')
-rw-r--r--gnu/lib/libg++/include/NegExp.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/gnu/lib/libg++/include/NegExp.h b/gnu/lib/libg++/include/NegExp.h
new file mode 100644
index 0000000..b96f913
--- /dev/null
+++ b/gnu/lib/libg++/include/NegExp.h
@@ -0,0 +1,55 @@
+// 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 _NegativeExpntl_h
+#ifdef __GNUG__
+#pragma interface
+#endif
+#define _NegativeExpntl_h 1
+
+
+//
+// Negative Exponential Random Numbers
+//
+//
+
+#include <Random.h>
+
+class NegativeExpntl: public Random {
+protected:
+ double pMean;
+public:
+ NegativeExpntl(double xmean, RNG *gen);
+ double mean();
+ double mean(double x);
+
+ virtual double operator()();
+};
+
+
+inline NegativeExpntl::NegativeExpntl(double xmean, RNG *gen)
+: Random(gen) {
+ pMean = xmean;
+}
+
+inline double NegativeExpntl::mean() { return pMean; }
+inline double NegativeExpntl::mean(double x) {
+ double t = pMean; pMean = x;
+ return t;
+}
+
+#endif
OpenPOWER on IntegriCloud