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Re: [Help-gsl] Re: question about dirichlet lnpdf function (potential bu

From: Brian Gough
Subject: Re: [Help-gsl] Re: question about dirichlet lnpdf function (potential bug)
Date: Sun, 19 Jul 2009 11:04:35 +0100
User-agent: Wanderlust/2.14.0 (Africa) Emacs/22.2 Mule/5.0 (SAKAKI)

At Thu, 16 Jul 2009 16:21:54 -0500,
Rodney Sparapani wrote:
> Now, I'm not so sure.  I see in the GSL docs that you allow the
> alphas to be positive including zero.  However, GCSR says that
> the alphas>0.  What does alpha1=0 mean?

You're right, the function should only be valid for alpha>0.  I'll
change the documentation in the manual to be "alpha > 0" rather than
"alpha >= 0".  For alpha = 0  a nan is the correct result.


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