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probability/SExpDist.h

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/* #start# ***********************************************************

           Scheduling Simulator
        Lehrstuhl f"ur Effiziente Algorithmen
           Technische Universit"at M"unchen

 File    : $Id: SExpDist.h,v 1.3 2003/04/12 11:34:56 meierb Exp $

 Purpose : 

 * #end# ************************************************************* */

#ifndef SEXPDIST_H
#define SEXPDIST_H

#include "SProbabilityDist.h"

class SExpDist : public SProbabilityDist  {
public:
  SExpDist() :
    _p(0.0)
  {}
   
  SExpDist(double mean) :
    _p(1/mean)
    {};

  SExpDist(const SExpDist& rU)
    { _p = rU._p;}

  virtual double getValue();

  virtual double getExpectation() const;
  
  virtual Type getType() const
    { return EXPONENTIAL; }

  double getLambda() const { return _p; };
  
protected:
  double _p;
};

#endif

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