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* [Bug math/6814] expm1() raises bogus invalid exception
[not found] <bug-6814-131@http.sourceware.org/bugzilla/>
@ 2012-02-29 22:34 ` jsm28 at gcc dot gnu.org
2020-05-23 10:37 ` mtk.manpages at gmail dot com
1 sibling, 0 replies; 5+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2012-02-29 22:34 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=6814
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #4 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-02-29 22:33:42 UTC ---
This appears to have been fixed, probably by various changes in 2009 (there is
a test in the testsuite of expm1 overflow, which will verify there is no such
inappropriate exception, and that test was added in 2009). However, the
OVERFLOW exception for expm1 seems to have disappeared on x86, so I've filed
bug 13787 for that problem.
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^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug math/6814] expm1() raises bogus invalid exception
[not found] <bug-6814-131@http.sourceware.org/bugzilla/>
2012-02-29 22:34 ` [Bug math/6814] expm1() raises bogus invalid exception jsm28 at gcc dot gnu.org
@ 2020-05-23 10:37 ` mtk.manpages at gmail dot com
1 sibling, 0 replies; 5+ messages in thread
From: mtk.manpages at gmail dot com @ 2020-05-23 10:37 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=6814
--- Comment #5 from Michael Kerrisk <mtk.manpages at gmail dot com> ---
Fix documented for man-pages-5.07.
commit fdd3fe51793b75b03ab7e48797e11dc46c935f3b
Author: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Sat May 23 11:56:12 2020 +0200
expm1.3: The bogus invalid floating-point exception bug has been fixed
Sometime around 2009 (approximately 2.11) according to
https://www.sourceware.org/bugzilla/show_bug.cgi?id=6814.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/man3/expm1.3 b/man3/expm1.3
index 460068a6d..8b60c3453 100644
--- a/man3/expm1.3
+++ b/man3/expm1.3
@@ -153,16 +153,16 @@ for some large negative
.I x
values (where the function result approaches \-1),
.PP
-For some large positive
-.I x
-values,
-.BR expm1 ()
-raises a bogus invalid floating-point exception in addition to the expected
-overflow exception, and returns a NaN instead of positive infinity.
-.\" FIXME .
-.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6814
+Before approximately glibc version 2.11,
+.\" http://sources.redhat.com/bugzilla/show_bug.cgi?id=6814
.\" e.g., expm1(1e5) through expm1(1.00199970127e5),
.\" but not expm1(1.00199970128e5) and beyond.
+.BR expm1 ()
+raised a bogus invalid floating-point exception in addition to the expected
+overflow exception, and returned a NaN instead of positive infinity.
+for some large positive
+.I x
+values,
.PP
Before version 2.11,
.\" It looks like the fix was in 2.11, or possibly 2.12.
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* [Bug math/6814] New: expm1() raises bogus invalid exception
@ 2008-08-04 4:42 mtk dot manpages at gmail dot com
2008-08-04 4:50 ` [Bug math/6814] " mtk dot manpages at gmail dot com
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: mtk dot manpages at gmail dot com @ 2008-08-04 4:42 UTC (permalink / raw)
To: glibc-bugs
For certain large values of x, expm1() returns a bogus FE_INVALID exception and
returns a NaN instead of positive invinity.
--
Summary: expm1() raises bogus invalid exception
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: math
AssignedTo: aj at suse dot de
ReportedBy: mtk dot manpages at gmail dot com
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=6814
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[not found] <bug-6814-131@http.sourceware.org/bugzilla/>
2012-02-29 22:34 ` [Bug math/6814] expm1() raises bogus invalid exception jsm28 at gcc dot gnu.org
2020-05-23 10:37 ` mtk.manpages at gmail dot com
2008-08-04 4:42 [Bug math/6814] New: " mtk dot manpages at gmail dot com
2008-08-04 4:50 ` [Bug math/6814] " mtk dot manpages at gmail dot com
2008-08-04 4:50 ` mtk dot manpages at gmail dot com
2008-08-04 4:51 ` mtk dot manpages at gmail dot com
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