Re: [Bug-gsl] Bug report: gsl_sf_hyperg_2F1

[Brian Gough]

At Mon, 5 Sep 2011 16:46:44 -0400,
Robert L. Wolpert wrote:
> 
> Hi, GNU.  
> 
> The Gauss hypergeometric function 2F1 is described in detail in Abramowitz &
> Stegan (1964) eqn. 15.1.1, page 556.  It is implemented in the gsl library as
> "gsl_sf_hyperg_2F1".  The implementation frequently returns "NaN" or "Inf"
> for domain values where 2F1 is well-defined and easy to calculate.  I hope
> you will address this in an upcoming version, because your implementations
> are widely used and respected.

Thanks for the bug report.  I've added a test case for the values in
your example program, although I don't have a fix for it right now.


> 
> Specifically:
> 
>   GSL Version:     1.3

Not sure if the above version is a typo, but 1.3 is very old.  The
current release is 1.15.

-- 
Brian Gough