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[Bug math/19189] [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 29 Oct 2015 23:10:50 +0000
- Subject: [Bug math/19189] [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
- Auto-submitted: auto-generated
- References: <bug-19189-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=19189
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=af1b2fd08388a3beec3ee7eaa30646d9c002824e
commit af1b2fd08388a3beec3ee7eaa30646d9c002824e
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Oct 29 23:09:51 2015 +0000
Fix ldbl-128 log1pl (-qNaN) spurious "invalid" exception (bug 19189).
The ldbl-128 version of log1pl raises a spurious "invalid" exception
for a -qNaN argument. This patch fixes this by making the initial
check for infinities and NaNs handle arguments of both signs in such a
way that NaNs result in a NaN being returned (quietly if the input NaN
was quiet) while +Inf results in +Inf being returned and -Inf results
in a qNaN being returned with "invalid" exception raised.
Tested for mips64.
[BZ #19189]
* sysdeps/ieee754/ldbl-128/s_log1pl.c (__log1pl): Make check for
non-finite argument handle arguments with negative sign.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
NEWS | 2 +-
sysdeps/ieee754/ldbl-128/s_log1pl.c | 4 ++--
3 files changed, 7 insertions(+), 3 deletions(-)
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