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From: gwyn@BRL.ARPA (VLD/VMB)
Newsgroups: net.lang.c
Subject: Re:  swap() macro
Message-ID: <1946@brl-smoke.ARPA>
Date: Thu, 3-Jul-86 16:52:43 EDT
Article-I.D.: brl-smok.1946
Posted: Thu Jul  3 16:52:43 1986
Date-Received: Sat, 5-Jul-86 06:08:27 EDT
Sender: news@brl-smoke.ARPA
Lines: 6

No, you just implemented an elaborate form of "call by reference".
"Call by name" is quite something else, and if you think about it
you'll realize that swapping "by name" would mean that the names
have to be reassociated with different objects, which is contrary
to the meaning of names in this context.  I haven't seen call-by-
name included in any language since Algol.