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=-2.9 required=5.0 tests=BAYES_00,MAILING_LIST_MULTI
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,730a7c3edfcae91f
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2003-11-03 04:11:38 PST
Path: 
 archiver1.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!newsfeed.freenet.de!fr.ip.ndsoftware.net!nerim.net!usenet-fr.net!enst.fr!melchior!cuivre.fr.eu.org!melchior.frmug.org!not-for-mail
From: christoph.grein@eurocopter.com
Newsgroups: comp.lang.ada
Subject: Re: Macks - adding unit constants?
Date: Mon, 3 Nov 2003 12:57:48 +0100 (MET)
Organization: Cuivre, Argent, Or
Message-ID: <mailman.260.1067861497.25614.comp.lang.ada@ada-france.org>
Reply-To: grein@egypt.otn.eurocopter.de
NNTP-Posting-Host: lovelace.ada-france.org
Mime-Version: 1.0
Content-Type: TEXT/plain; charset=us-ascii
X-Trace: melchior.cuivre.fr.eu.org 1067861497 94359 80.67.180.195 (3 Nov 2003
 12:11:37 GMT)
X-Complaints-To: usenet@melchior.cuivre.fr.eu.org
NNTP-Posting-Date: Mon, 3 Nov 2003 12:11:37 +0000 (UTC)
To: comp.lang.ada@ada-france.org
Return-Path: <christoph.grein@eurocopter.com>
X-Authentication-Warning: mail.eurocopter.com: uucp set sender to
	<christoph.grein@eurocopter.com> using -f
Content-MD5: iP16S6hmxmJpgm2ONi9heg==
X-Mailer: dtmail 1.2.1 CDE Version 1.2.1 SunOS 5.6 sun4u sparc 
X-Virus-Scanned: by amavisd-new-20030616-p5 (Debian) at ada-france.org
X-BeenThere: comp.lang.ada@ada-france.org
X-Mailman-Version: 2.1.2
Precedence: list
List-Id: Gateway to the comp.lang.ada Usenet newsgroup
	<comp.lang.ada.ada-france.org>
List-Unsubscribe: <http://www.ada-france.org/mailman/listinfo/comp.lang.ada>,
	<mailto:comp.lang.ada-request@ada-france.org?subject=unsubscribe>
List-Post: <mailto:comp.lang.ada@ada-france.org>
List-Help: <mailto:comp.lang.ada-request@ada-france.org?subject=help>
List-Subscribe: <http://www.ada-france.org/mailman/listinfo/comp.lang.ada>,
	<mailto:comp.lang.ada-request@ada-france.org?subject=subscribe>
Xref: archiver1.google.com comp.lang.ada:1963
Date: 2003-11-03T12:57:48+01:00

> As opposed to what?  It still doesn't tell which units we are working
> in.  Dimensionless numbers should not be able to suddenly become
> dimensioned numbers without som kind of explicit conversion.

Why not:

   Dist: constant Meter := +0.000_86;

Or use Dmitry Kazakov's or my method:

  Dist: constant SI := 0.000_86 * Meter;
or
  Dist: constant SI := 0.86 * Milli * Meter;

See http://home.T-Online.de/home/Christ-Usch.Grein/Ada/

You'll find references to four methods to use dimensioned items (one of them of 
course Macks).