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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 GNU CC.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY. No author or distributor
- accepts responsibility to anyone for the consequences of using it
- or for whether it serves any particular purpose or works at all,
- unless he says so in writing. Refer to the GNU CC General Public
- License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- GNU CC, but only under the conditions described in the
- GNU CC General Public License. A copy of this license is
- supposed to have been given to you along with GNU CC so you
- can know your rights and responsibilities. It should be in a
- file named COPYING. Among other things, the copyright notice
- and this notice must be preserved on all copies.
- */
- #ifndef _Weibull_h
- #ifdef __GNUG__
- #pragma once
- #pragma interface
- #endif
- #define _Weibull_h
-
- #include <_Random.h>
-
- class Weibull: public Random {
- protected:
- double pAlpha;
- double pInvAlpha;
- double pBeta;
-
- void setState();
-
- public:
- Weibull(double alpha, double beta, RNG *gen);
-
- double alpha();
- double alpha(double x);
-
- double beta();
- double beta(double x);
-
- virtual double operator()();
- };
-
- #if defined(__OPTIMIZE__) || defined(USE_LIBGXX_INLINES)
-
- inline void Weibull::setState() {
- pInvAlpha = 1.0 / pAlpha;
- }
-
- inline Weibull::Weibull(double alpha, double beta, RNG *gen) : (gen)
- {
- pAlpha = alpha;
- pBeta = beta;
- setState();
- }
-
- inline double Weibull::alpha() { return pAlpha; }
-
- inline double Weibull::alpha(double x) {
- double tmp = pAlpha;
- pAlpha = x;
- setState();
- return tmp;
- }
-
- inline double Weibull::beta() { return pBeta; };
- inline double Weibull::beta(double x) {
- double tmp = pBeta;
- pBeta = x;
- return tmp;
- };
-
-
- #endif
- #endif
-