X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Date:	Thu, 27 Sep 2007 17:01:49 +0100
From:	Owen Rees <owen DOT rees AT hp DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: strange behavior with perl v 5.8.8
Message-ID:	<6F610F274679310E33C07DE5@orees.hpl.hp.com>
In-Reply-To:	<5abc24640709270814j5148c43ejbfe46f022fd6ad1b@mail.gmail.com>
References:	<5abc24640709270814j5148c43ejbfe46f022fd6ad1b AT mail DOT gmail DOT com>
X-Mailer:	Mulberry/4.0.6 (Linux/x86)
MIME-Version:	1.0
X-IsSubscribed:	yes
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

--On Thursday, September 27, 2007 11:14:09 AM -0400 Andrew Louie wrote:

> when incrementing by 0.1 i get a strange behavior where at some
> arbitrary  number, it will append 0.9999999999 to the end of the
> number.

This is rounding error and applies to all computer systems and all 
programming languages that use fixed size number representations. It can be 
fatal - for example see 
<http://www.ima.umn.edu/~arnold/disasters/patriot.html>.

-- 
Owen Rees; speaking personally, and not on behalf of HP.
========================================================
Hewlett-Packard Limited.   Registered No: 690597 England
Registered Office:  Cain Road, Bracknell, Berks RG12 1HN

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

- Raw text -