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[Bug-gsl] [bug #32306] sign error in gsl_sf_hyperg_2F1

From: Brian Gough
Subject: [Bug-gsl] [bug #32306] sign error in gsl_sf_hyperg_2F1
Date: Mon, 31 Jan 2011 16:47:45 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-GB; rv: Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13


                 Summary: sign error in gsl_sf_hyperg_2F1
                 Project: GNU Scientific Library
            Submitted by: bjg
            Submitted on: Mon Jan 31 16:47:44 2011
                Category: Accuracy problem
                Severity: 3 - Normal
        Operating System: 
                  Status: Confirmed
             Assigned to: None
             Open/Closed: Open
                 Release: 1.14
         Discussion Lock: Any



There's a sign error discontinuity in gsl_sf_hyperg_2F1(-0.5,1.5,1,x) for

address@hidden:~/tmp$ ./a.out 
0.5 -0.539352 8.64471e-15
0.5 0.539353 6.22896e-14


File Attachments:

Date: Mon Jan 31 16:47:44 2011  Name: hyp.c  Size: 354B   By: bjg
test program


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