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* [Bug math/6787] New: exp10() does not consistently set errno @ 2008-07-30 15:02 mtk dot manpages at gmail dot com 2008-07-31 8:56 ` [Bug math/6787] " mtk dot manpages at gmail dot com 0 siblings, 1 reply; 6+ messages in thread From: mtk dot manpages at gmail dot com @ 2008-07-30 15:02 UTC (permalink / raw) To: glibc-bugs exp10() correctly raises exceptions for overflow and underflow. However, errno is only set to ERANGE for the overflow case. For underflow, it is not set. It should also be set to ERANGE in the latter case. Note also that exp10() is inconsistent with exp2() and exp(), both of which always set errno for bother underflow and overflow. Background: On error, many glibc math functions both set errno and raise an exception (fetestexcept(3)). For example, the following function all do this: acos(), asin(), cosh(), sinh(), acosh(), asinh(), exp(), exp2(), ldexp(), log(), log10(), log2(). However, there is much inconsistency. Some functions raise an exception, but don't set errno. Some functions set errno for some errors, but not others. A few set errno, but don't raise an exception. This series of bug reports documents deviations from what I consider the ideal: all functions should BOTH set errno AND raise an exception for all errors. All of these reports relate to tests on glibc 2.8 (as provided by SUSE 11.0). -- Summary: exp10() does not consistently set errno 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=6787 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug math/6787] exp10() does not consistently set errno 2008-07-30 15:02 [Bug math/6787] New: exp10() does not consistently set errno mtk dot manpages at gmail dot com @ 2008-07-31 8:56 ` mtk dot manpages at gmail dot com 0 siblings, 0 replies; 6+ messages in thread From: mtk dot manpages at gmail dot com @ 2008-07-31 8:56 UTC (permalink / raw) To: glibc-bugs ------- Additional Comments From mtk dot manpages at gmail dot com 2008-07-31 08:55 ------- Created an attachment (id=2852) --> (http://sourceware.org/bugzilla/attachment.cgi?id=2852&action=view) test program Sample run showing problem. Note that errno is set for overflow, but not for underflow. $ /tmp/mt_exp10 -- -1e5 errno == 0 fetestexcept() says: FE_UNDERFLOW FE_INEXACT exp10(-1.00000000000000000e+05)=0.00000000000000000e+00 0 FE_UNDERFLOW +0 $ /tmp/mt_exp10 -- 1e5 errno == ERANGE fetestexcept() says: FE_OVERFLOW FE_INEXACT exp10(1.00000000000000000e+05)=inf ERANGE FE_OVERFLOW +inf -- http://sourceware.org/bugzilla/show_bug.cgi?id=6787 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <bug-6787-131@http.sourceware.org/bugzilla/>]
* [Bug math/6787] exp10() does not consistently set errno [not found] <bug-6787-131@http.sourceware.org/bugzilla/> @ 2012-02-29 22:23 ` jsm28 at gcc dot gnu.org 2013-11-29 16:33 ` cvs-commit at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 6+ messages in thread From: jsm28 at gcc dot gnu.org @ 2012-02-29 22:23 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=6787 Joseph Myers <jsm28 at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|aj at suse dot de |unassigned at sourceware | |dot org --- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> 2012-02-29 22:22:37 UTC --- Confirmed with current sources on x86 and x86_64 - with the addition that on x86_64, the UNDERFLOW exception doesn't get raised on 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] 6+ messages in thread
* [Bug math/6787] exp10() does not consistently set errno [not found] <bug-6787-131@http.sourceware.org/bugzilla/> 2012-02-29 22:23 ` jsm28 at gcc dot gnu.org @ 2013-11-29 16:33 ` cvs-commit at gcc dot gnu.org 2013-11-29 16:35 ` jsm28 at gcc dot gnu.org 2014-06-13 11:16 ` fweimer at redhat dot com 3 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2013-11-29 16:33 UTC (permalink / raw) To: glibc-bugs http://sourceware.org/bugzilla/show_bug.cgi?id=6787 --- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> --- This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "GNU C Library master sources". The branch, master has been updated via 2a77a467b273c1a72fa204a8fcc6d22e6e20bb1c (commit) from ea3bc4e821e20e70b093c9a33e54f99c79e0d847 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2a77a467b273c1a72fa204a8fcc6d22e6e20bb1c commit 2a77a467b273c1a72fa204a8fcc6d22e6e20bb1c Author: Joseph Myers <joseph@codesourcery.com> Date: Fri Nov 29 16:32:49 2013 +0000 Fix exp10 errno setting on underflow (bug 6787). ----------------------------------------------------------------------- Summary of changes: ChangeLog | 7 +++++++ NEWS | 23 ++++++++++++----------- math/libm-test.inc | 6 ++++-- math/w_exp10.c | 2 +- math/w_exp10f.c | 2 +- math/w_exp10l.c | 2 +- 6 files changed, 26 insertions(+), 16 deletions(-) -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug math/6787] exp10() does not consistently set errno [not found] <bug-6787-131@http.sourceware.org/bugzilla/> 2012-02-29 22:23 ` jsm28 at gcc dot gnu.org 2013-11-29 16:33 ` cvs-commit at gcc dot gnu.org @ 2013-11-29 16:35 ` jsm28 at gcc dot gnu.org 2014-06-13 11:16 ` fweimer at redhat dot com 3 siblings, 0 replies; 6+ messages in thread From: jsm28 at gcc dot gnu.org @ 2013-11-29 16:35 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=6787 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> --- Fixed for 2.19. -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug math/6787] exp10() does not consistently set errno [not found] <bug-6787-131@http.sourceware.org/bugzilla/> ` (2 preceding siblings ...) 2013-11-29 16:35 ` jsm28 at gcc dot gnu.org @ 2014-06-13 11:16 ` fweimer at redhat dot com 3 siblings, 0 replies; 6+ messages in thread From: fweimer at redhat dot com @ 2014-06-13 11:16 UTC (permalink / raw) To: glibc-bugs https://sourceware.org/bugzilla/show_bug.cgi?id=6787 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] 6+ messages in thread
end of thread, other threads:[~2014-06-13 11:16 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2008-07-30 15:02 [Bug math/6787] New: exp10() does not consistently set errno mtk dot manpages at gmail dot com 2008-07-31 8:56 ` [Bug math/6787] " mtk dot manpages at gmail dot com [not found] <bug-6787-131@http.sourceware.org/bugzilla/> 2012-02-29 22:23 ` jsm28 at gcc dot gnu.org 2013-11-29 16:33 ` cvs-commit at gcc dot gnu.org 2013-11-29 16:35 ` jsm28 at gcc dot gnu.org 2014-06-13 11:16 ` fweimer at redhat dot com
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