include/plaws/LogarithmicLaw.hpp

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00001 // LogarithmicLaw.hpp: this file is part of the REGAL project.
00002 //
00003 // REGAL : Random and Exhaustive Generators for Automata - Library
00004 //
00005 // Copyright (C) 2007 Julien DAVID.
00006 //
00007 // This program is free software; you can redistribute it and/or
00008 // modify it under the terms of the GNU General Public License
00009 // as published by the Free Software Foundation; either version 2
00010 // of the License, or (at your option) any later version.
00011 //
00012 // The complete GNU General Public Licence Notice can be found as the
00013 // `COPYING' file in the root directory.
00014 //
00015 //
00016 #ifndef LOGARITHMICLAW
00017 #define LOGARITHMICLAW
00018 
00019 
00020 #include"DiscreteProbabilityLaw.hpp"
00021 
00022 namespace regal{
00023 
00024   namespace plaws{
00025     
00026     class LogarithmicLaw: public DiscreteProbabilityLaw{
00027       
00028     private:
00029       
00030       virtual void updateProbability(const int & k){
00031         this->p=this->x*this->p*((k-1)/k);
00032       }
00033       
00034       virtual double initProbability(){
00035         return this->x/(log(1/(1-this->x)));
00036       }
00037       
00038       int initCounter(){return 1;}
00039       
00040     public:
00041       
00042       
00047       LogarithmicLaw(const double & lambda):DiscreteProbabilityLaw::DiscreteProbabilityLaw(lambda){
00048       }
00049       
00053       ~LogarithmicLaw(){
00054         verbose("Destruction of a Logarithmic Law");
00055       }
00056     };
00057     
00058   }
00059 
00060 }
00061   
00062 #endif
00063   

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