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* [Bug math/15426] New: Wrong sign of infinity from tgamma overflow @ 2013-05-01 22:18 jsm28 at gcc dot gnu.org 2013-05-08 12:01 ` [Bug math/15426] " jsm28 at gcc dot gnu.org 2014-06-13 18:09 ` fweimer at redhat dot com 0 siblings, 2 replies; 3+ messages in thread From: jsm28 at gcc dot gnu.org @ 2013-05-01 22:18 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=15426 Bug #: 15426 Summary: Wrong sign of infinity from tgamma overflow Product: glibc Version: 2.17 Status: NEW Severity: normal Priority: P2 Component: math AssignedTo: unassigned@sourceware.org ReportedBy: jsm28@gcc.gnu.org Classification: Unclassified When tgamma of a negative argument very close to 0 overflows (the result is essentially 1/x), it should produce negative infinity but wrongly produces positive infinity. Example on x86_64: tgamma (-0x1p-1074). (Discovered while working on a fix for the various known bugs about large ulps from tgamma.) -- 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/15426] Wrong sign of infinity from tgamma overflow 2013-05-01 22:18 [Bug math/15426] New: Wrong sign of infinity from tgamma overflow jsm28 at gcc dot gnu.org @ 2013-05-08 12:01 ` jsm28 at gcc dot gnu.org 2014-06-13 18:09 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: jsm28 at gcc dot gnu.org @ 2013-05-08 12:01 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=15426 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> 2013-05-08 12:00:35 UTC --- Fixed for 2.18 by: commit d8cd06db62d92f86cc8cc3c0d6a489bd207bb834 Author: Joseph Myers <joseph@codesourcery.com> Date: Wed May 8 11:58:18 2013 +0000 Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426). -- 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/15426] Wrong sign of infinity from tgamma overflow 2013-05-01 22:18 [Bug math/15426] New: Wrong sign of infinity from tgamma overflow jsm28 at gcc dot gnu.org 2013-05-08 12:01 ` [Bug math/15426] " jsm28 at gcc dot gnu.org @ 2014-06-13 18:09 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: fweimer at redhat dot com @ 2014-06-13 18:09 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=15426 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 18:09 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-05-01 22:18 [Bug math/15426] New: Wrong sign of infinity from tgamma overflow jsm28 at gcc dot gnu.org 2013-05-08 12:01 ` [Bug math/15426] " jsm28 at gcc dot gnu.org 2014-06-13 18:09 ` fweimer at redhat dot com
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