[Bug math/15384] One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c

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https://sourceware.org/bugzilla/show_bug.cgi?id=15384

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b8682397ab2db1aed7f25d0a0c7c81134a97c8c7

commit b8682397ab2db1aed7f25d0a0c7c81134a97c8c7
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Thu Sep 17 16:47:14 2015 +0000

    Reduce number of constants in __finite* (bug 15384).

    Bug 15384 notes that in __finite, two different constants are used
    that could be the same constant (the result only depends on the
    exponent of the floating-point representation), and that using the
    same constant is better for architectures where constants need loading
    from a constant pool.  This patch implements that change.

    Tested for x86_64, mips64 and powerpc.

        [BZ #15384]
        * sysdeps/ieee754/dbl-64/s_finite.c (FINITE): Use same constant as
        bit-mask as in subtraction.
        * sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c (__finite):
        Likewise.
        * sysdeps/ieee754/flt-32/s_finitef.c (FINITEF): Likewise.
        * sysdeps/ieee754/ldbl-128/s_finitel.c (__finitel): Likewise.
        * sysdeps/ieee754/ldbl-128ibm/s_finitel.c (__finitel): Likewise.

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

Summary of changes:
 ChangeLog                                     |    9 +++++++++
 NEWS                                          |   14 +++++++-------
 sysdeps/ieee754/dbl-64/s_finite.c             |    2 +-
 sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c |    2 +-
 sysdeps/ieee754/flt-32/s_finitef.c            |    2 +-
 sysdeps/ieee754/ldbl-128/s_finitel.c          |    2 +-
 sysdeps/ieee754/ldbl-128ibm/s_finitel.c       |    2 +-
 7 files changed, 21 insertions(+), 12 deletions(-)

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