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[Bug-gsl] [bug #43809] bug in gsl_sf_hyperg_1F1

From: Patrick Alken
Subject: [Bug-gsl] [bug #43809] bug in gsl_sf_hyperg_1F1
Date: Fri, 12 Dec 2014 19:23:30 +0000
User-agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:34.0) Gecko/20100101 Firefox/34.0


                 Summary: bug in gsl_sf_hyperg_1F1
                 Project: GNU Scientific Library
            Submitted by: psa
            Submitted on: Fri 12 Dec 2014 07:23:29 PM GMT
                Category: Runtime error
                Severity: 3 - Normal
        Operating System: 
                  Status: None
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any



from weibinli =at= gmail =dot= com

There seems a bug in the function “gsl_sf_hyperg_1F1" in version 1.16.

See the attached test program, in which the generated value is correct when
ri=1000 while is wrong when ri is large (ri=4000 in the program).
The result was compared with Mathematica. 

When I tried version 1.9, which somehow gives the correct result.
However I am not sure how this happens in


File Attachments:

Date: Fri 12 Dec 2014 07:23:29 PM GMT  Name: gsl_hyperg.c  Size: 358B   By:

Date: Fri 12 Dec 2014 07:23:29 PM GMT  Name: ATT00001.txt  Size: 84B   By: psa



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