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* [Bug math/14914] New: ldbl-128ibm powl inaccuracy
@ 2012-12-03 22:34 jsm28 at gcc dot gnu.org
2012-12-04 14:46 ` [Bug math/14914] " jsm28 at gcc dot gnu.org
2014-06-14 7:39 ` fweimer at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-12-03 22:34 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14914
Bug #: 14914
Summary: ldbl-128ibm powl inaccuracy
Product: glibc
Version: 2.16
Status: NEW
Severity: normal
Priority: P2
Component: math
AssignedTo: unassigned@sourceware.org
ReportedBy: jsm28@gcc.gnu.org
Classification: Unclassified
Host: powerpc*-*
Various powl tests fail for ldbl-128ibm with errors of up to 168ulp:
Failure: Test: pow (0x1.0000000000001p0, -0x1.23456789abcdfp61) ==
1.0118762747828234466621210689458255908670e-253
Result:
is: 1.01187627478282344666e-253 0x1.7bd57afffb8670bdc80bp-841
should be: 1.01187627478282344666e-253 0x1.7bd57afffb8670bdc80bp-841
difference: 2.82339593858271666738e-283 0x1.4fe00000000000000000p-939
ulp : 167.9375
max.ulp : 0.0000
Maximal error of `pow'
is : 168 ulp
accepted: 1 ulp
I have a patch.
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* [Bug math/14914] ldbl-128ibm powl inaccuracy
2012-12-03 22:34 [Bug math/14914] New: ldbl-128ibm powl inaccuracy jsm28 at gcc dot gnu.org
@ 2012-12-04 14:46 ` jsm28 at gcc dot gnu.org
2014-06-14 7:39 ` fweimer at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-12-04 14:46 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14914
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-12-04 14:44:35 UTC ---
Fixed for 2.17 by:
commit b3b099af0356831530f553934cdd90716137b1a3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Dec 4 14:39:24 2012 +0000
Fix powl inaccuracy for ldbl-128ibm (bug 14914).
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* [Bug math/14914] ldbl-128ibm powl inaccuracy
2012-12-03 22:34 [Bug math/14914] New: ldbl-128ibm powl inaccuracy jsm28 at gcc dot gnu.org
2012-12-04 14:46 ` [Bug math/14914] " jsm28 at gcc dot gnu.org
@ 2014-06-14 7:39 ` fweimer at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2014-06-14 7:39 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=14914
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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2012-12-03 22:34 [Bug math/14914] New: ldbl-128ibm powl inaccuracy jsm28 at gcc dot gnu.org
2012-12-04 14:46 ` [Bug math/14914] " jsm28 at gcc dot gnu.org
2014-06-14 7:39 ` fweimer at redhat dot com
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