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From: volpe@underdog.crd.ge.com (Christopher R Volpe)
Newsgroups: comp.lang.c
Subject: Re: How to reverse bits...
Message-ID: <11047@crdgw1.crd.ge.com>
Date: 15 Aug 90 12:41:02 GMT
References: <2059@ux.acs.umn.edu> <1990Aug14.203212.16248@motcad.portal.com> <43975@apple.Apple.COM>
Sender: news@crdgw1.crd.ge.com
Reply-To: volpe@underdog.crd.ge.com (Christopher R Volpe)
Lines: 16

In article <43975@apple.Apple.COM>, austing@Apple.COM (Glenn L. Austin) writes:
|>jtc@motcad.portal.com (J.T. Conklin) writes:
|>>Another useful table is one that flips the bits 1-for-0,0-for-1.  This
|>>is useful for inverting an image.
|>
|>How about "c ^= (char) -1"?

Works only on twos-complement machines. 

How about " c = ~c "?? It seems that there is a special purpose operator
that does exactly and only what the question is asking, it ought to be
used, no? Otherwise, what's it (the ~ operator) there for?                
==================
Chris Volpe
G.E. Corporate R&D
volpecr@crd.ge.com