[Bug math/17724] __rintl namespace

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https://sourceware.org/bugzilla/show_bug.cgi?id=17724

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f56f91245a0a5aa0facaa14b5608cfb761df7c38

commit f56f91245a0a5aa0facaa14b5608cfb761df7c38
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Mon Dec 22 18:45:50 2014 +0000

    Split __kernel_standard* functions (fixes bug 17724).

    Bug 17724 reports references to fesetround being brought in by
    ldbl-128ibm rintl via references to __rintl from __kernel_standard_l.
    Because all three __kernel_standard* functions are in the same file,
    this gets brought in even though only the long double version
    __kernel_standard_l needs __rintl, and the C90 functions use only
    __kernel_standard.

    This patch fixes this by splitting the three versions into separate
    files; it's fine for long double functions to refer to fe* functions
    directly, unless they get called by C90 double functions.

    Tested for x86_64 (testsuite; the reordering of code means disassembly
    of shared libraries can't usefully be compared).  Tested for powerpc
    that the relevant issue disappears from the linknamespace test
    output.

        [BZ #17724]
        * sysdeps/ieee754/k_standard.c: Don't include <float.h>.
        (__kernel_standard_f): Remove.  Moved to k_standardf.c.
        (__kernel_standard_l): Remove.  Moved to k_standardl.c with
        (char *) casts added.
        * sysdeps/ieee754/k_standardf.c: New file.
        * sysdeps/ieee754/k_standardl.c: Likewise.
        * math/Makefile (libm-support): Remove k_standard.
        (libm-calls): Add k_standard.

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

Summary of changes:
 ChangeLog                                          |   12 ++
 NEWS                                               |    2 +-
 math/Makefile                                      |    4 +-
 sysdeps/ieee754/k_standard.c                       |   90 --------------
 iconvdata/cp770.c => sysdeps/ieee754/k_standardf.c |   19 ++--
 sysdeps/ieee754/k_standardl.c                      |  123 ++++++++++++++++++++
 6 files changed, 149 insertions(+), 101 deletions(-)
 copy iconvdata/cp770.c => sysdeps/ieee754/k_standardf.c (68%)
 create mode 100644 sysdeps/ieee754/k_standardl.c

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