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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:1.9.2.13) Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13 |
URL:
<http://savannah.gnu.org/bugs/?32306>
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
_______________________________________________________
Details:
There's a sign error discontinuity in gsl_sf_hyperg_2F1(-0.5,1.5,1,x) for
x~=~0.5
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
<http://savannah.gnu.org/bugs/download.php?file_id=22573>
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?32306>
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