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[Bug math/6786] erfc() does not set errno for underflow
- From: "mtk dot manpages at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 31 Jul 2008 08:52:30 -0000
- Subject: [Bug math/6786] erfc() does not set errno for underflow
- References: <20080730145255.6786.mtk.manpages@gmail.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From mtk dot manpages at gmail dot com 2008-07-31 08:52 -------
Created an attachment (id=2851)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=2851&action=view)
test program
(I got the underflow value wrong in my initial report. I think 106.9 gives
underflow with the long double variant. 27 doies the trick for the double
version.)
Sample run showing problem:
$ /tmp/mt_erfc 27
errno == 0
fetestexcept() says: FE_UNDERFLOW FE_INEXACT
erfc(2.70000000000000000e+01)=5.23704643935262924e-319
0 FE_UNDERFLOW subnormal
--
http://sourceware.org/bugzilla/show_bug.cgi?id=6786
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