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* [Bug math/15406] New: catan, catanh missing underflow exceptions
@ 2013-04-26 16:19 jsm28 at gcc dot gnu.org
2013-04-26 19:28 ` [Bug math/15406] " jsm28 at gcc dot gnu.org
2014-06-13 18:14 ` fweimer at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2013-04-26 16:19 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=15406
Bug #: 15406
Summary: catan, catanh missing underflow exceptions
Product: glibc
Version: 2.17
Status: NEW
Severity: normal
Priority: P2
Component: math
AssignedTo: unassigned@sourceware.org
ReportedBy: jsm28@gcc.gnu.org
Classification: Unclassified
catan and catanh can miss underflow exceptions in the case where the tiny
result comes from the multiplication of a log by 0.25, and that multiplication
is exact although the mathematical result of the log wasn't exact. Examples on
x86_64 are catan (0x1p511 + 0.5i) and catanh (0.5 + 0x1p511i).
(Before my recent fix for bug 15394, the tiny results would have been given
inaccurately as 0, but still with missing underflow exception.)
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^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug math/15406] catan, catanh missing underflow exceptions 2013-04-26 16:19 [Bug math/15406] New: catan, catanh missing underflow exceptions jsm28 at gcc dot gnu.org @ 2013-04-26 19:28 ` jsm28 at gcc dot gnu.org 2014-06-13 18:14 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: jsm28 at gcc dot gnu.org @ 2013-04-26 19:28 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=15406 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> 2013-04-26 19:28:09 UTC --- Fixed for 2.18 by: commit 9457fd952cafc701375fc9fae575a4aca1374de3 Author: Joseph Myers <joseph@codesourcery.com> Date: Fri Apr 26 19:26:22 2013 +0000 Fix catan, catanh missing underflows (bug 15406). -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug math/15406] catan, catanh missing underflow exceptions 2013-04-26 16:19 [Bug math/15406] New: catan, catanh missing underflow exceptions jsm28 at gcc dot gnu.org 2013-04-26 19:28 ` [Bug math/15406] " jsm28 at gcc dot gnu.org @ 2014-06-13 18:14 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: fweimer at redhat dot com @ 2014-06-13 18:14 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=15406 Florian Weimer <fweimer at redhat dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Flags| |security- -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2014-06-13 18:14 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-04-26 16:19 [Bug math/15406] New: catan, catanh missing underflow exceptions jsm28 at gcc dot gnu.org 2013-04-26 19:28 ` [Bug math/15406] " jsm28 at gcc dot gnu.org 2014-06-13 18:14 ` fweimer at redhat dot com
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