[Bug math/20228] [i386/x86_64] log10l (sNaN) returns sNaN

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https://sourceware.org/bugzilla/show_bug.cgi?id=20228

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=09096b36152dca599ca781b7299d0d662ca74ce7

commit 09096b36152dca599ca781b7299d0d662ca74ce7
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Jun 8 22:59:18 2016 +0000

    Fix i386/x86_64 log10l (sNaN) (bug 20228).

    The i386/x86_64 versions of log10l 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 #20228]
        * sysdeps/i386/fpu/e_log10l.S (__ieee754_log10l): Add NaN input to
        itself.
        * sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Likewise.
        * math/libm-test.inc (log10_test_data): Add sNaN tests.

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

Summary of changes:
 ChangeLog                     |    6 ++++++
 math/libm-test.inc            |    2 ++
 sysdeps/i386/fpu/e_log10l.S   |    1 +
 sysdeps/x86_64/fpu/e_log10l.S |    1 +
 4 files changed, 10 insertions(+), 0 deletions(-)

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