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* [Bug math/15405] New: csin, csinh, ccos, ccosh missing underflow exceptions
@ 2013-04-26 15:26 jsm28 at gcc dot gnu.org
2013-04-26 19:27 ` [Bug math/15405] " 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 15:26 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=15405
Bug #: 15405
Summary: csin, csinh, ccos, ccosh 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
Similar to bug 14478 (fixed) for cexp, the functions csin, csinh, ccos, ccosh
are missing underflow exceptions when the final result underflows but the
multiplication generating it is exact although the mathematical result of the
function is not exactly representable. Examples showing this on x86_64 are:
csin (0x1p-1074 + 0x1p-1022i)
csinh (0x1p-1022 + 0x1p-1074i)
ccos (0x1p-954 + 0x1p-120i)
ccosh (0x1p-120 + 0x1p-954i)
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* [Bug math/15405] csin, csinh, ccos, ccosh missing underflow exceptions
2013-04-26 15:26 [Bug math/15405] New: csin, csinh, ccos, ccosh missing underflow exceptions jsm28 at gcc dot gnu.org
@ 2013-04-26 19:27 ` 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 19:27 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=15405
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 19:27:43 UTC ---
Fixed for 2.18 by:
commit f0302940e7c2acb587971e3c99dfbd00aa4e2134
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Apr 26 19:25:19 2013 +0000
Fix csin, csinh, ccos, ccosh missing underflows (bug 15405).
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* [Bug math/15405] csin, csinh, ccos, ccosh missing underflow exceptions
2013-04-26 15:26 [Bug math/15405] New: csin, csinh, ccos, ccosh missing underflow exceptions jsm28 at gcc dot gnu.org
2013-04-26 19:27 ` [Bug math/15405] " 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=15405
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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2013-04-26 15:26 [Bug math/15405] New: csin, csinh, ccos, ccosh missing underflow exceptions jsm28 at gcc dot gnu.org
2013-04-26 19:27 ` [Bug math/15405] " jsm28 at gcc dot gnu.org
2014-06-13 18:14 ` fweimer at redhat dot com
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