Path: utzoo!mnetor!uunet!husc6!cmcl2!brl-adm!brl-smoke!gwyn
From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re: "logical" xor
Message-ID: <7080@brl-smoke.ARPA>
Date: 14 Jan 88 10:07:31 GMT
References: <2946@zeus.TEK.COM> <170@illusion.UUCP> <39a83409.ae48@apollo.uucp>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 7

In article <39a83409.ae48@apollo.uucp> arnold@apollo.UUCP (Ken Arnold) writes:
>All (a != 0) is guaranteed to generate (if a is not 0) is a non-zero value,
>*any* non-zero value, which just *usually* is 1.  It could be 7.

I don't know why Ken says this.  In fact the value of a relational or
(in)equality expression is 1 if the condition is true and 0 if the
condition is false.  That's why my example ((x != 0) ^ (y != 0)) works.