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[Bug math/22244] ynf and yn are wrong without the svid compat wrapper
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Wed, 04 Oct 2017 09:16:33 +0000
- Subject: [Bug math/22244] ynf and yn are wrong without the svid compat wrapper
- Auto-submitted: auto-generated
- References: <bug-22244-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22244
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=86c27ade1e44e29922d33676f950f7334edb37a7
commit 86c27ade1e44e29922d33676f950f7334edb37a7
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Tue Oct 3 18:12:42 2017 +0100
[BZ #22244] Fix yn(n,0) without SVID wrapper
Without SVID compat wrapper yn(n,0) and ynf(n,0) does not raise
the divide-by-zero excpetion and it may return inf with the wrong
sign for n < 0.
[BZ #22244]
* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_yn): Fix x == 0 case.
* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_ynf): Likewise.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f8f8ef7aba40ef883291e4c4d95a419c3327d70
commit 8f8f8ef7aba40ef883291e4c4d95a419c3327d70
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Tue Oct 3 17:13:18 2017 +0100
[BZ #22243] fix log2(0) and log(10) in downward rounding
On 64bit targets if the SVID compat wrapper is suppressed (e.g. static
linking)
then log2(0) and log10(0) returned inf instead of -inf.
[BZ #22243]
* sysdeps/ieee754/dbl-64/wordsize-64/e_log10.c (__ieee754_log10): Use
fabs.
* sysdeps/ieee754/dbl-64/wordsize-64/e_log2.c (__ieee754_log2):
Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++++++++
sysdeps/ieee754/dbl-64/e_jn.c | 10 +++++-----
sysdeps/ieee754/dbl-64/wordsize-64/e_log10.c | 2 +-
sysdeps/ieee754/dbl-64/wordsize-64/e_log2.c | 2 +-
sysdeps/ieee754/flt-32/e_jnf.c | 6 +++---
5 files changed, 22 insertions(+), 10 deletions(-)
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