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[Bug-gsl] [bug #41837] bugs in gsl_sf_hyperg_U

From: Patrick Alken
Subject: [Bug-gsl] [bug #41837] bugs in gsl_sf_hyperg_U
Date: Tue, 11 Mar 2014 19:52:20 +0000
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:27.0) Gecko/20100101 Firefox/27.0


                 Summary: bugs in gsl_sf_hyperg_U
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Tue 11 Mar 2014 07:52:19 PM GMT
                Category: Runtime error
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any




I have been using the gsl_sf_hyperg_U function for a while and I found
several bugs when calculating normal values. For example,

1) gsl_sf_hyperg_U(1, -500, 0.1) gives incorrect value: 9.3246e+03, which
actually should be around 0.19.

2) Many domain error bugs. For example, gsl_sf_hyperg_U(1, -6.67, 1) should
have value ~0.128 but will invoke domain error for gsl.


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