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* [Bug math/13840] New: hypotf overflow and underflow
@ 2012-03-13 20:39 jsm28 at gcc dot gnu.org
2012-03-14 1:21 ` [Bug math/13840] " jsm28 at gcc dot gnu.org
2014-06-26 13:59 ` fweimer at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-03-13 20:39 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13840
Bug #: 13840
Summary: hypotf overflow and underflow
Product: glibc
Version: 2.15
Status: NEW
Severity: normal
Priority: P2
Component: math
AssignedTo: jsm28@gcc.gnu.org
ReportedBy: jsm28@gcc.gnu.org
Classification: Unclassified
sysdeps/ieee754/flt-32/e_hypotf.c's implementation of hypotf overflows
internally for some large inputs (for example, giving inf for hypotf (0x3p125,
0x4p125) instead of 0x5p125). It also gives inaccurate results for some small
inputs that are not subnormal. I'll send a patch.
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^ permalink raw reply [flat|nested] 3+ messages in thread* [Bug math/13840] hypotf overflow and underflow 2012-03-13 20:39 [Bug math/13840] New: hypotf overflow and underflow jsm28 at gcc dot gnu.org @ 2012-03-14 1:21 ` jsm28 at gcc dot gnu.org 2014-06-26 13:59 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: jsm28 at gcc dot gnu.org @ 2012-03-14 1:21 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=13840 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> 2012-03-14 01:20:44 UTC --- Fixed by: commit 7c10fd3515f983ca732b2166ccffebbf83603f1f Author: David S. Miller <davem@davemloft.net> Date: Tue Mar 13 18:08:58 2012 -0700 Fix hypotf overflow/underflow by using double precision instead of scaling. [BZ #13840] * sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Rewrite to use double-precision for the calculation instead of scaling. Testcases added by: commit aa4a2ae1dbc2c7a3469ec13610f0d7a84e3bfc79 Author: Joseph Myers <joseph@codesourcery.com> Date: Wed Mar 14 01:12:05 2012 +0000 Add tests for hypot overflow/underflow. -- 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/13840] hypotf overflow and underflow 2012-03-13 20:39 [Bug math/13840] New: hypotf overflow and underflow jsm28 at gcc dot gnu.org 2012-03-14 1:21 ` [Bug math/13840] " jsm28 at gcc dot gnu.org @ 2014-06-26 13:59 ` fweimer at redhat dot com 1 sibling, 0 replies; 3+ messages in thread From: fweimer at redhat dot com @ 2014-06-26 13:59 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=13840 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:[~2014-06-26 13:59 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2012-03-13 20:39 [Bug math/13840] New: hypotf overflow and underflow jsm28 at gcc dot gnu.org 2012-03-14 1:21 ` [Bug math/13840] " jsm28 at gcc dot gnu.org 2014-06-26 13:59 ` fweimer at redhat dot com
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