Re: [ROOT] gRandom->Binomial()

From: Rene Brun (Rene.Brun@cern.ch)
Date: Fri Jun 23 2000 - 17:19:39 MEST


Hi Phil,
Thanks for reporting this problem with the Binomial distribution.
I have fixed the problem in my development version.
Note that if you use CVS, you can import the fix immediatly from our site.

Rene Brun

Phil Adamson wrote:
> 
> Hi,
>         I can't get TRandom::Binomial to produce sensible results.
> Attached is the result of the following macro - am I doing something
> stupid, or is this a bug?
> 
> void randtest()
> {
>   TH1F *hist = new TH1F("hist","Test gRandom->Binomial(10,0.5)",10,0,10);
>   for (int i=0;i<1000000;i++) {
>     hist->Fill(gRandom->Binomial(10,0.5));
>   }
> hist->Draw();
> }
> 
> 
> Tried with root 2.24/4 and 2.23/12 - same results.
> 
>         Phil
> 
>   --------------------------------------------------------------------------------
> 
>                 Name: c1.eps
>    c1.eps       Type: Postscript Document (APPLICATION/PostScript)
>             Encoding: BASE64



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