Date: Mon, 29 Mar 1999 17:09:54 -0500 (EST) From: twp@rootsweb.com To: FreeBSD-gnats-submit@freebsd.org Subject: bin/10863: rint(3) returns erratic results Message-ID: <199903292209.RAA11713@ma-1.rootsweb.com>
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>Number: 10863
>Category: bin
>Synopsis: rint(3) returns erratic results
>Confidential: yes
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Mar 29 14:20:01 PST 1999
>Closed-Date:
>Last-Modified:
>Originator: Tim Pierce
>Release: FreeBSD 2.2.7-RELEASE i386
>Organization:
RootsWeb Genealogical Data Cooperative
>Environment:
>Description:
rint(3) appears to return inconsistent results for some inputs. For
example, it rounds both 5.5 and 6.5 to 6. If rint always rounds up,
it should round these numbers to 6 and 7; if it always rounds down, it
should round these numbers to 5 and 6; if it always rounds to the
nearest integer, it should round to 6 and 7. Is there any situation
where it would be correct to round both 5.5 and 6.5 to 6?
>How-To-Repeat:
#include <math.h>
main()
{
printf ("%f\n", rint(5.5));
printf ("%f\n", rint(6.5));
}
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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