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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.
- */
- #ifndef _DiscreteUniform_h
- #ifdef __GNUG__
- #pragma once
- #pragma interface
- #endif
- #define _DiscreteUniform_h 1
-
- #include <xrandom.h>
-
- //
- // The interval [lo..hi)
- //
-
- class DiscreteUniform: public Random {
- long pLow;
- long pHigh;
- double delta;
- public:
- DiscreteUniform(long low, long high, RNG *gen);
-
- long low();
- long low(long x);
- long high();
- long high(long x);
-
- virtual double operator()();
- };
-
- #if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
-
- inline DiscreteUniform::DiscreteUniform(long low, long high, RNG *gen) : (gen)
- {
- pLow = (low < high) ? low : high;
- pHigh = (low < high) ? high : low;
- delta = (pHigh - pLow) + 1;
- }
-
- inline long DiscreteUniform::low() { return pLow; }
-
- inline long DiscreteUniform::low(long x) {
- long tmp = pLow;
- pLow = x;
- delta = (pHigh - pLow) + 1;
- return tmp;
- }
-
- inline long DiscreteUniform::high() { return pHigh; }
-
- inline long DiscreteUniform::high(long x) {
- long tmp = pHigh;
- pHigh = x;
- delta = (pHigh - pLow) + 1;
- return tmp;
- }
-
- #endif
- #endif
-