[Bug math/16350] asinh missing underflows

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https://sourceware.org/bugzilla/show_bug.cgi?id=16350

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8db3cdefefe39e9d42b05b1610a63190e9f7fba4

commit 8db3cdefefe39e9d42b05b1610a63190e9f7fba4
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Thu Jun 18 23:27:41 2015 +0000

    Fix asinh missing underflows (bug 16350).

    Similar to various other bugs in this area, some asinh implementations
    do not raise the underflow exception for subnormal arguments, when the
    result is tiny and inexact.  This patch forces the exception in a
    similar way to previous fixes.

    Tested for x86_64, x86 and mips64.

        [BZ #16350]
        * sysdeps/i386/fpu/s_asinh.S (__asinh): Force underflow exception
        for arguments with small absolute value.
        * sysdeps/i386/fpu/s_asinhf.S (__asinhf): Likewise.
        * sysdeps/i386/fpu/s_asinhl.S (__asinhl): Likewise.
        * sysdeps/ieee754/dbl-64/s_asinh.c: Include <float.h>.
        (__asinh): Force underflow exception for arguments with small
        absolute value.
        * sysdeps/ieee754/flt-32/s_asinhf.c: Include <float.h>.
        (__asinhf): Force underflow exception for arguments with small
        absolute value.
        * sysdeps/ieee754/ldbl-128/s_asinhl.c: Include <float.h>.
        (__asinhl): Force underflow exception for arguments with small
        absolute value.
        * sysdeps/ieee754/ldbl-128ibm/s_asinhl.c: Include <float.h>.
        (__asinhl): Force underflow exception for arguments with small
        absolute value.
        * sysdeps/ieee754/ldbl-96/s_asinhl.c: Include <float.h>.
        (__asinhl): Force underflow exception for arguments with small
        absolute value.
        * math/auto-libm-test-in: Do not mark underflow exceptions as
        possibly missing for bug 16350.
        * math/auto-libm-test-out: Regenerated.

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

Summary of changes:
 ChangeLog                              |   24 ++++
 NEWS                                   |   28 ++--
 math/auto-libm-test-in                 |   13 +-
 math/auto-libm-test-out                |  236 ++++++++++++++++----------------
 sysdeps/i386/fpu/s_asinh.S             |   11 ++-
 sysdeps/i386/fpu/s_asinhf.S            |   11 ++-
 sysdeps/i386/fpu/s_asinhl.S            |    7 +-
 sysdeps/ieee754/dbl-64/s_asinh.c       |    6 +
 sysdeps/ieee754/flt-32/s_asinhf.c      |    6 +
 sysdeps/ieee754/ldbl-128/s_asinhl.c    |    6 +
 sysdeps/ieee754/ldbl-128ibm/s_asinhl.c |    6 +
 sysdeps/ieee754/ldbl-96/s_asinhl.c     |    6 +
 12 files changed, 218 insertions(+), 142 deletions(-)

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