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[Bug-gsl] [bug #27859] gsl_sf_hyperg_U not implemented for x<0

From: Brian Gough
Subject: [Bug-gsl] [bug #27859] gsl_sf_hyperg_U not implemented for x<0
Date: Fri, 30 Oct 2009 12:29:41 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv: Gecko/2009061118 Fedora/3.0.11-1.fc9 Firefox/3.0.11


                 Summary: gsl_sf_hyperg_U not implemented for x<0
                 Project: GNU Scientific Library
            Submitted by: bjg
            Submitted on: Fri 30 Oct 2009 12:29:40 PM GMT
                Category: Runtime error
                Severity: 3 - Normal
        Operating System: 
                  Status: Confirmed
             Assigned to: None
             Open/Closed: Open
                 Release: 1.13
         Discussion Lock: Any



From: Nacho Molina <address@hidden>
To: address@hidden
Subject: [Help-gsl] Domain error in function gsl_sf_hyperg_U_int for
a       negative argument
Date: Mon, 26 Oct 2009 22:08:19 +0100


     I am trying to use the special function gsl_sf_hyperg_U_int(int  
n, int m, double x) and it seems it is implemented only for x being  
positive. Is it that true? I could not find any reference about that  
on the manual.  I have used mathematica and it is able to give a value  
for x < 0 what makes me think that the function is well defined on  
negative real numbers.

Thank you very much for your work and hlep,


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