Re: [netmod] Justification for decimal64 over string for floating point values in geo location data?

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Tue, 07 July 2020 12:18 UTC

Return-Path: <j.schoenwaelder@jacobs-university.de>
X-Original-To: netmod@ietfa.amsl.com
Delivered-To: netmod@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2AE403A0C09 for <netmod@ietfa.amsl.com>; Tue, 7 Jul 2020 05:18:27 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.899
X-Spam-Level:
X-Spam-Status: No, score=-1.899 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zHaun6JvtEzo for <netmod@ietfa.amsl.com>; Tue, 7 Jul 2020 05:18:25 -0700 (PDT)
Received: from atlas5.jacobs-university.de (atlas5.jacobs-university.de [212.201.44.20]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 508233A0C0B for <netmod@ietf.org>; Tue, 7 Jul 2020 05:18:24 -0700 (PDT)
Received: from localhost (demetrius5.irc-it.jacobs-university.de [10.70.0.222]) by atlas5.jacobs-university.de (Postfix) with ESMTP id D240887D; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
X-Virus-Scanned: amavisd-new at jacobs-university.de
Received: from atlas5.jacobs-university.de ([10.70.0.198]) by localhost (demetrius5.jacobs-university.de [10.70.0.222]) (amavisd-new, port 10032) with ESMTP id Knlse83oiWAm; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
Received: from hermes.jacobs-university.de (hermes.jacobs-university.de [212.201.44.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hermes.jacobs-university.de", Issuer "DFN-Verein Global Issuing CA" (verified OK)) by atlas5.jacobs-university.de (Postfix) with ESMTPS; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
Received: from localhost (demetrius5.irc-it.jacobs-university.de [10.70.0.222]) by hermes.jacobs-university.de (Postfix) with ESMTP id 66B6920154; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
X-Virus-Scanned: amavisd-new at jacobs-university.de
Received: from hermes.jacobs-university.de ([212.201.44.23]) by localhost (demetrius5.jacobs-university.de [10.70.0.222]) (amavisd-new, port 10028) with ESMTP id 0h1YQXun4Ihy; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
Received: from localhost (anna.jacobs.jacobs-university.de [10.50.218.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by hermes.jacobs-university.de (Postfix) with ESMTPS id 1E9FF200E4; Tue, 7 Jul 2020 14:18:22 +0200 (CEST)
Date: Tue, 7 Jul 2020 14:18:21 +0200
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Christian Hopps <chopps@chopps.org>
Cc: NetMod WG <netmod@ietf.org>
Message-ID: <20200707121821.ry6irvxx6uzvf6pu@anna.jacobs.jacobs-university.de>
Reply-To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
Mail-Followup-To: Christian Hopps <chopps@chopps.org>, NetMod WG <netmod@ietf.org>
References: <B548C4B4-2A97-4736-A6B2-358D1491D125@chopps.org> <20200707112450.wrttuprwrdr3nl5i@anna.jacobs.jacobs-university.de> <C77ED032-788C-410C-A239-86286ADE4E4A@chopps.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <C77ED032-788C-410C-A239-86286ADE4E4A@chopps.org>
Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/FxD3ctVdKnkxXO5ZrwDyfZueiJg>
Subject: Re: [netmod] Justification for decimal64 over string for floating point values in geo location data?
X-BeenThere: netmod@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: NETMOD WG list <netmod.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/netmod>, <mailto:netmod-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/netmod/>
List-Post: <mailto:netmod@ietf.org>
List-Help: <mailto:netmod-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/netmod>, <mailto:netmod-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Jul 2020 12:18:27 -0000

On Tue, Jul 07, 2020 at 07:53:19AM -0400, Christian Hopps wrote:
> 
> So do you think it's enough to just use decimal64, and not justify it's use over strings?

I do not know what 'strings' are here.

In the xml and json encodings, everything finally has a string
representation. But what matters is how the strings are interpreted
since computers internally often do not use strings when it comes to
numbers or addresses or ...

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>