[Bug math/20229] [i386/x86_64] log1pl (sNaN) returns sNaN

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https://sourceware.org/bugzilla/show_bug.cgi?id=20229

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8c010e2f7135902b6dc90f0577573dacbb54cde9

commit 8c010e2f7135902b6dc90f0577573dacbb54cde9
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Jun 8 23:11:42 2016 +0000

    Fix i386/x86_64 log1pl (sNaN) (bug 20229).

    The i386/x86_64 versions of log1pl 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.

        [BZ #20229]
        * sysdeps/i386/fpu/s_log1pl.S (__log1pl): Add NaN input to itself.
        * sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise.
        * math/libm-test.inc (log1p_test_data): Add sNaN tests.

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

Summary of changes:
 ChangeLog                     |    5 +++++
 math/libm-test.inc            |    2 ++
 sysdeps/i386/fpu/s_log1pl.S   |    1 +
 sysdeps/x86_64/fpu/s_log1pl.S |    1 +
 4 files changed, 9 insertions(+), 0 deletions(-)

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