[Bug math/20219] [i386] atanhl (sNaN) returns sNaN

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https://sourceware.org/bugzilla/show_bug.cgi?id=20219

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8fa8a330f95c2f39eae7960ccf2825e693789202

commit 8fa8a330f95c2f39eae7960ccf2825e693789202
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Tue Jun 7 23:08:32 2016 +0000

    Fix i386 atanhl (sNaN) (bug 20219).

    The i386 version of atanhl returns sNaN for sNaN input.  This patch
    fixes it to add NaN arguments to themselves so it returns qNaN in this
    case.

    Tested for x86_64 and x86.

        [BZ #20219]
        * sysdeps/i386/fpu/e_atanhl.S (__ieee754_atanhl): Add NaN argument
        to itself.
        * math/libm-test.inc (atanh_test_data): Add sNaN tests.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                   |    5 +++++
 math/libm-test.inc          |    2 ++
 sysdeps/i386/fpu/e_atanhl.S |    1 +
 3 files changed, 8 insertions(+), 0 deletions(-)

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