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From: "xcr dot code at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sources.redhat.com
Subject: [Bug libc/11365] New: nearbyintf(float) does not get correct result for 2886220.75 and 3058792.75
Date: Wed, 10 Mar 2010 06:12:00 -0000 [thread overview]
Message-ID: <20100310061220.11365.xcr.code@gmail.com> (raw)
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Hi,
When I use a 64bit mode to compile nearbyintf(float), it will get wrong result
for float number 2886220.75 and 3058792.75
I think this is a bug for /lib64/tls/libm.so.6
===the result...
nearbyintf(2886220.660000) ==> 2886220.000000
nearbyintf(2886220.690000) ==> 2886220.000000
nearbyintf(2886220.720000) ==> 2886220.000000
nearbyintf(2886220.750000) ==> 2886220.000000 //Wrong result...
nearbyintf(2886220.780000) ==> 2886220.000000
nearbyintf(2886220.810000) ==> 2886220.000000
nearbyintf(2886220.840000) ==> 2886220.000000
nearbyintf(2886220.870000) ==> 2886220.000000
nearbyintf(2886220.900000) ==> 2886221.000000
nearbyintf(2886220.930000) ==> 2886221.000000
nearbyintf(2886220.960000) ==> 2886221.000000
==Env========================================================
Linux oshcsc7b5 2.6.9-78.ELsmp #1 SMP Wed Jul 9 15:46:26 EDT 2008 x86_64 unknown
unknown GNU/Linux
Reading specs from /tool/pandora64/.package/gcc-4.2.2/lib/gcc/x86_64-unknown-
linux-gnu/4.2.2/specs
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/tool/pandora64/.package/gcc-4.2.2
Thread model: posix
gcc version 4.2.2
--
Summary: nearbyintf(float) does not get correct result for
2886220.75 and 3058792.75
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: xcr dot code at gmail dot com
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11365
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next reply other threads:[~2010-03-10 6:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-10 6:12 xcr dot code at gmail dot com [this message]
2010-03-11 8:48 ` [Bug libc/11365] " xcr dot code at gmail dot com
2010-06-01 3:56 ` [Bug math/11365] " pasky at suse dot cz
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