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[Bug math/16619] [ldbl-128ibm] frexpl bad results on some denormal arguments
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 16 Apr 2014 10:04:50 +0000
- Subject: [Bug math/16619] [ldbl-128ibm] frexpl bad results on some denormal arguments
- Auto-submitted: auto-generated
- References: <bug-16619-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=16619
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aa5f0ff11ad2cc85277c64cf65c723a9664e1149
commit aa5f0ff11ad2cc85277c64cf65c723a9664e1149
Author: Alan Modra <amodra@gmail.com>
Date: Wed Apr 16 19:33:32 2014 +0930
Correct IBM long double frexpl.
Besides fixing the bugzilla, this also fixes corner-cases where the high
and low double differ greatly in magnitude, and handles a denormal
input without resorting to a fp rescale.
[BZ #16740]
[BZ #16619]
* sysdeps/ieee754/ldbl-128ibm/s_frexpl.c (__frexpl): Rewrite.
* math/libm-test.inc (frexp_test_data): Add tests.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 ++
math/libm-test.inc | 9 ++
sysdeps/ieee754/ldbl-128ibm/s_frexpl.c | 146 ++++++++++++++++++++++----------
3 files changed, 118 insertions(+), 44 deletions(-)
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