[Bug math/20234] [ldbl-128ibm] log1pl (sNaN) returns sNaN

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20234

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b7519f61fe2c57981c69c0c65996968b9a4d9b62

commit b7519f61fe2c57981c69c0c65996968b9a4d9b62
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Thu Jun 9 17:25:54 2016 +0000

    Fix ldbl-128ibm log1pl (sNaN) (bug 20234).

    The ldbl-128ibm version of log1pl returns sNaN for sNaN input.  This
    patch fixes it to add such inputs to themselves so that qNaN is
    returned in this case.

    Tested for powerpc.

        [BZ #20234]
        * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Add positive
        infinity or NaN input to itself.

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

Summary of changes:
 ChangeLog                              |    4 ++++
 sysdeps/ieee754/ldbl-128ibm/s_log1pl.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

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