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From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.unix.questions
Subject: Re^2: Bit Switching - How?
Message-ID: <2295@solo11.cs.vu.nl>
Date: 13 Apr 89 00:13:11 GMT
References: <2345@van-bc.UUCP> <486@lakart.UUCP>
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 12

dg@lakart.UUCP (David Goodenough) writes:
\#define	swap(a, b, n)	((a) ^= ((b) & (n)), (b) ^= ((a) & (n)), \
\							(a) ^= ((b) & (n)))

This one still suffers from the following:

	swap(*p, *q, ~0);

where p and q point at the same location.
-- 
 "If it isn't aesthetically pleasing, |Maarten Litmaath @ VU Amsterdam:
  it's probably wrong." (jim@bilpin). |maart@cs.vu.nl, mcvax!botter!maart