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* [Bug math/13841] New: csqrt overflow and underflow
@ 2012-03-13 21:22 jsm28 at gcc dot gnu.org
2012-03-14 11:55 ` [Bug math/13841] " 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 21:22 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13841
Bug #: 13841
Summary: csqrt 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
The use of hypot in csqrt means it suffers from overflow and underflow in
internal calculations. On x86_64, csqrt (DBL_MAX + DBL_MAX * I) wrongly
returns inf + 0 * I; for 0x1p-1074 + 0x1p-1074 * I, the result is 0 + NaN * I.
I'll send a patch.
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* [Bug math/13841] csqrt overflow and underflow
2012-03-13 21:22 [Bug math/13841] New: csqrt overflow and underflow jsm28 at gcc dot gnu.org
@ 2012-03-14 11:55 ` 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 11:55 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=13841
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 11:55:04 UTC ---
Fixed by:
commit e456826d7a539fb322bb9719297bd386eded8e32
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Mar 14 11:53:32 2012 +0000
Fix csqrt overflow/underflow (bug 13841).
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* [Bug math/13841] csqrt overflow and underflow
2012-03-13 21:22 [Bug math/13841] New: csqrt overflow and underflow jsm28 at gcc dot gnu.org
2012-03-14 11:55 ` [Bug math/13841] " 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=13841
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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2012-03-13 21:22 [Bug math/13841] New: csqrt overflow and underflow jsm28 at gcc dot gnu.org
2012-03-14 11:55 ` [Bug math/13841] " jsm28 at gcc dot gnu.org
2014-06-26 13:59 ` fweimer at redhat dot com
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