Changeset - r116:b6bede534255
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alpar (Alpar Juttner)
alpar@cs.elte.hu
Serious buxfixes in Random::gamma() and Random::pareto()
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1 file changed with 2 insertions and 2 deletions:
lemon/random.h
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lemon/random.h
Show white space 12 line context
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@@ -792,13 +792,13 @@
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	else
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	  {
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	    xi=1.0-std::log(V1);
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	    nu=V0*std::exp(-xi);
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	  }
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      } while(nu>std::pow(xi,delta-1.0)*std::exp(-xi));
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      return theta*(xi-gamma(int(std::floor(k))));
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      return theta*(xi+gamma(int(std::floor(k))));
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    }
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    /// Weibull distribution
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    /// This function generates a Weibull distribution random number.


			




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    /// 


			




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@@ -816,13 +816,13 @@


			




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    /// 


			




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    ///\param k shape parameter (<tt>k>0</tt>)


			




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    ///\param x_min location parameter (<tt>x_min>0</tt>)


			




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    ///


			




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    double pareto(double k,double x_min)


			




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    {


			




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      return exponential(gamma(k,1.0/x_min));


			




	
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      return exponential(gamma(k,1.0/x_min))+x_min;


			




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    }  


			




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    /// Poisson distribution


			




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    /// This function generates a Poisson distribution random number with


			




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    /// parameter \c lambda.


			




        

    






    
    



    


    

     
    
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