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[Bug math/20227] [i386/x86_64] logl (sNaN) returns sNaN
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 08 Jun 2016 22:25:18 +0000
- Subject: [Bug math/20227] [i386/x86_64] logl (sNaN) returns sNaN
- Auto-submitted: auto-generated
- References: <bug-20227-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=20227
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=df179d88080ad7a733edccc655cf5f6bbec6f8fc
commit df179d88080ad7a733edccc655cf5f6bbec6f8fc
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Jun 8 22:24:06 2016 +0000
Fix i386/x86_64 logl (sNaN) (bug 20227).
The i386/x86_64 versions of logl return sNaN for sNaN input. This
patch fixes them to add a NaN input to itself so that qNaN is returned
in this case.
Tested for x86_64 and x86 (including a build for i586 to cover the
non-i686 logl version).
[BZ #20227]
* sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Add NaN input to
itself.
* sysdeps/i386/i686/fpu/e_logl.S (__ieee754_logl): Likewise.
* sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise.
* math/libm-test.inc (log_test_data): Add sNaN tests.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
math/libm-test.inc | 2 ++
sysdeps/i386/fpu/e_logl.S | 1 +
sysdeps/i386/i686/fpu/e_logl.S | 1 +
sysdeps/x86_64/fpu/e_logl.S | 1 +
5 files changed, 12 insertions(+), 0 deletions(-)
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