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=-1.9 required=5.0 tests=BAYES_00
	autolearn=unavailable autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail
From: Paul Rubin <no.email@nospam.invalid>
Newsgroups: comp.lang.ada
Subject: Re: AI12-0218: What is the portable representation clause for
 processing IETF packets on little-endian machines?
Date: Thu, 10 May 2018 16:14:55 -0700
Organization: A noiseless patient Spider
Message-ID: <87lgcryufk.fsf@nightsong.com>
References: <ec0145a4-9698-41f2-bc70-964dc1850e50@googlegroups.com>
	<9af47760-e731-4cb5-a1a0-d63e31019ce5@googlegroups.com>
	<877eob1cc6.fsf@nightsong.com>
	<c9986056-cc3d-432b-839d-fa226eb6e5f8@googlegroups.com>
	<flk0a3Fpvi4U1@mid.individual.net>
Mime-Version: 1.0
Content-Type: text/plain
Injection-Info: reader02.eternal-september.org;
 posting-host="8ee8a87c586ad688bbbd7b3afaf6ee4e";
	logging-data="28373"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX18nOO8XfWcLBfGv80Nx1i+/"
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)
Cancel-Lock: sha1:+uu6dNyZZTLK/g0Mat78c5USBEk=
	sha1:AMnh76gKDK+T5sFvHLAC+/WJOg0=
Xref: reader02.eternal-september.org comp.lang.ada:52229
Date: 2018-05-10T16:14:55-07:00
List-Id: <comp.lang.ada>

Niklas Holsti <niklas.holsti@tidorum.invalid> writes:
> It is not clearly explained how endianness is interpreted for fields
> that do not align with octet boundaries.

I don't see an unclarity as long as the machine is either big or little
endian.  That specifies whether the more significant bits are at the
higher addresses or the lower ones.  There could possibly be some
confusion with the weird old VAX representation that was neither big nor
little, but the Erlang page doesn't try to deal with that case.