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From: "mtk dot manpages at gmail dot com" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sources.redhat.com Subject: [Bug math/6784] New: fmod() inconsistently sets errno on domain error Date: Wed, 30 Jul 2008 12:30:00 -0000 [thread overview] Message-ID: <20080730122926.6784.mtk.manpages@gmail.com> (raw) The calls fmod(x, 0) and fmod(inf, y) should both result in a domain error. For both of these calls, an invalid exception is correctly raised. However, errno is not set consistently. fmod(x, 0) does (correctly) set errno to EDOM. However, fmod(inf, y) does not set errno; it should do so. 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: fmod() inconsistently sets errno on domain error 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=6784 ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is.
next reply other threads:[~2008-07-30 12:30 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2008-07-30 12:30 mtk dot manpages at gmail dot com [this message] 2008-07-31 8:47 ` [Bug math/6784] " mtk dot manpages at gmail dot com 2010-09-11 15:47 ` mtk dot manpages at gmail dot com
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