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* [Bug math/6782] New: tan() does not set errno on domain error
@ 2008-07-30 11:48 mtk dot manpages at gmail dot com
  2008-07-31  8:42 ` [Bug math/6782] " mtk dot manpages at gmail dot com
  2010-09-11 15:09 ` mtk dot manpages at gmail dot com
  0 siblings, 2 replies; 3+ messages in thread
From: mtk dot manpages at gmail dot com @ 2008-07-30 11:48 UTC (permalink / raw)
  To: glibc-bugs

For a domain error, tan() does not set errno.  It should set errno to EDOM.

NOTE: the inverse trig functions do correctly set errno on error!

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: tan() does not set 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=6782

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^ permalink raw reply	[flat|nested] 3+ messages in thread
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2012-02-29 21:02 ` [Bug math/6782] tan() does not set errno on domain error jsm28 at gcc dot gnu.org
2008-07-30 11:48 [Bug math/6782] New: " mtk dot manpages at gmail dot com
2008-07-31  8:42 ` [Bug math/6782] " mtk dot manpages at gmail dot com
2010-09-11 15:09 ` mtk dot manpages at gmail dot com

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