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From: gvr@cs.brown.edu (George V. Reilly)
Newsgroups: comp.lang.c
Subject: Re: How to reverse bits...
Message-ID: <47379@brunix.UUCP>
Date: 15 Aug 90 06:07:26 GMT
References: <2059@ux.acs.umn.edu> <1990Aug14.203212.16248@motcad.portal.com> <43975@apple.Apple.COM>
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Reply-To: gvr@cs.brown.edu (George V. Reilly)
Organization: Brown University Department of Computer Science
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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"?

How about ~, the built-in one's complement operator?  Just mask off the
high-order bits if you don't want them.
	output = ~input & 0xFF
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George V. Reilly			gvr@cs.brown.edu
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