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From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: char signedness (was: What's a C expert?)
Message-ID: <10726@smoke.BRL.MIL>
Date: 13 Aug 89 02:54:06 GMT
References: <12214@well.UUCP> <6057@microsoft.UUCP> <4722@alvin.mcnc.org> <25999@amdcad.AMD.COM> <4724@alvin.mcnc.org>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 9

In article <4724@alvin.mcnc.org> spl@mcnc.org.UUCP (Steve Lamont) writes:
-In article <25999@amdcad.AMD.COM> tim@amd.com (Tim Olson) writes:
->Having the sign of chars be undefined allows the implementation to be as
->efficient as possible with respect to converting between chars and ints.
-Huh?  Are you telling us that the standard *allows* such a horrible
-thing?

It has to -- that's been a C language rule since way back (see K&R 1st
Edition, for example).