[Bug math/19085] ldbl-128 lrintl, lroundl missing exceptions for 32-bit long

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https://sourceware.org/bugzilla/show_bug.cgi?id=19085

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=119d073e334e9889a3fd904b333cd13d8217bc58

commit 119d073e334e9889a3fd904b333cd13d8217bc58
Author: Joseph Myers <joseph@codesourcery.com>
Date:   Wed Oct 7 16:10:59 2015 +0000

    Fix ldbl-128 lrintl, lroundl missing exceptions for 32-bit long (bug
19085).

    The ldbl-128 implementations of lrintl and lroundl miss "invalid"
    exceptions on systems with 32-bit long for arguments that overflow
    long but have exponent below 48.  This patch fixes this by rearranging
    the sequence of tests in the code so the exponent < 48 case is only
    used for exponents that don't overflow long.

    Tested for mips64 (n32 and n64).

        [BZ #19085]
        * sysdeps/ieee754/ldbl-128/s_lrintl.c (__lrintl): Move test for
        exponent below 48 inside case for non-overflowing exponent.
        * sysdeps/ieee754/ldbl-128/s_lroundl.c (__lroundl): Likewise.

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

Summary of changes:
 ChangeLog                            |    7 +++++++
 NEWS                                 |    2 +-
 sysdeps/ieee754/ldbl-128/s_lrintl.c  |   24 ++++++++++++------------
 sysdeps/ieee754/ldbl-128/s_lroundl.c |   20 ++++++++++----------
 4 files changed, 30 insertions(+), 23 deletions(-)

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