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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: net.lang.c
Subject: Re: swap() macro
Message-ID: <1836@brl-smoke.ARPA>
Date: Mon, 30-Jun-86 16:25:06 EDT
Article-I.D.: brl-smok.1836
Posted: Mon Jun 30 16:25:06 1986
Date-Received: Tue, 1-Jul-86 03:54:13 EDT
References: <1201@brl-smoke.ARPA> <193@stracs.cs.strath.ac.uk> <733@ho95e.UUCP>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 6

In article <733@ho95e.UUCP> wcs@ho95e.UUCP (Bill Stewart 1-201-949-0705 ihnp4!ho95c!wcs HO 2G202) writes:
>I'm not sure I can define what "work right" means in a swap :-)

It may be amusing and/or instructive to contemplate the fact that
there is no way to write a function that exchanges the contents of
two variables in a language where parameters are passed "by name".