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From: "zimmerma+gcc at loria dot fr" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/16561] New: Bad overflowing y0/y1/yn results for directed rounding
Date: Wed, 12 Feb 2014 10:20:00 -0000 [thread overview]
Message-ID: <bug-16561-131@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=16561
Bug ID: 16561
Summary: Bad overflowing y0/y1/yn results for directed rounding
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: zimmerma+gcc at loria dot fr
on x86_64 in single precision (y17 means yn with n=17):
Testing function y17 for exponent 0 [seed=14309].
rounding mode MPFR_RNDU:
wrong overflow for x=4.0000000000000@-269
library gives -@Inf@
mpfr gives -f.ffffffffffff8@255
Since rounding is towards +Inf, the result should not be -Inf.
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next reply other threads:[~2014-02-12 10:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-12 10:20 zimmerma+gcc at loria dot fr [this message]
2014-02-12 10:22 ` [Bug math/16561] " zimmerma+gcc at loria dot fr
2014-02-12 12:47 ` zimmerma+gcc at loria dot fr
2014-06-12 17:09 ` jsm28 at gcc dot gnu.org
2014-06-13 8:38 ` fweimer at redhat dot com
2014-06-13 9:38 ` [Bug math/16561] Bad overflowing yn " zimmerma+gcc at loria dot fr
2014-06-27 14:53 ` cvs-commit at gcc dot gnu.org
2014-06-27 14:55 ` jsm28 at gcc dot gnu.org
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