From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.3 required=5.0 tests=BAYES_00,
	REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: a07f3367d7,63043e3a9a3d050f
X-Google-Attributes: gida07f3367d7,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news1.google.com!news3.google.com!feeder1-2.proxad.net!proxad.net!feeder1-1.proxad.net!217.73.144.45.MISMATCH!feeder2.ecngs.de!ecngs!feeder.ecngs.de!Xl.tags.giganews.com!border1.nntp.ams.giganews.com!nntp.giganews.com!local2.nntp.ams.giganews.com!nntp.bt.com!news.bt.com.POSTED!not-for-mail
NNTP-Posting-Date: Tue, 26 Oct 2010 07:29:37 -0500
From: Brian Drummond <brian_drummond@btconnect.com>
Newsgroups: comp.lang.ada
Subject: Re: loop problem with exit condition
Date: Tue, 26 Oct 2010 13:38:46 +0100
Reply-To: brian@shapes.demon.co.uk
Message-ID: <hqidc6p2d9rhntem6d0cmsttqsh4jnem6j@4ax.com>
References: 
 <3087f399-2cae-4bc8-bba1-e728943473bb@e14g2000yqe.googlegroups.com>
 <d684c722-d17e-4f1b-8a50-f455f55cf58e@m15g2000yqm.googlegroups.com>
 <1spdu1yb2khd0$.rk8xvebgn574.dlg@40tude.net> <op.vk5w9gtdule2fv@garhos>
X-Newsreader: Forte Agent 1.7/32.534
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Usenet-Provider: http://www.giganews.com
X-AuthenticatedUsername: NoAuthUser
X-Trace: 
 sv3-2FqZ6ToEc1e01l32cuj2JOTOiqx/SU523xYD4LbmdYzaxHfS4oQKRfvAtQwNsmNOAUxW9kFWUiTtie0!sGQRtzRs/rYbLPCvZ4Znph4Cdomr9CinWwhsBmUq02DGKe0ZzTWsEeHaUKZn7dr0MiP2aCaZ5zVe!b/U=
X-Complaints-To: abuse@btinternet.com
X-DMCA-Complaints-To: abuse@btinternet.com
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint
 properly
X-Postfilter: 1.3.40
X-Original-Bytes: 2022
Xref: g2news1.google.com comp.lang.ada:14794
Date: 2010-10-26T13:38:46+01:00
List-Id: <comp.lang.ada>

On Tue, 26 Oct 2010 04:59:30 +0200, Yannick Duch�ne (Hibou57)
<yannick_duchene@yahoo.fr> wrote:

>Le Sun, 26 Sep 2010 11:10:24 +0200, Dmitry A. Kazakov  
><mailbox@dmitry-kazakov.de> a �crit:
>> in your case the simplest way to remove bias would be to multiply the  
>> step:
>> [�]
>>          Inner := Inner_Start + Inner_Step * Long_Float (J - 1);
>
>I did not knew that. Why is an iterative addition less accurate than a  
>multiplication ? Does it have something to deal with adjustment of the  
>exponent ? (the one of the float's internal representation)

An iterative addition and a multiplication both have rounding error bounded by
epsilon.

N iterative additions versus one multiplication, however...

- Brian