Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!usc!srhqla!demott!kdq
From: kdq@demott.COM (Kevin D. Quitt)
Newsgroups: comp.lang.c
Subject: Re: How to reverse bits...
Message-ID: <487@demott.COM>
Date: 13 Aug 90 23:09:53 GMT
References: <1990Aug13.185757.3236@sti.fi>
Reply-To: kdq@demott.COM (Root)
Organization: DeMott Electronics Co., Van Nuys CA
Lines: 8

In article <1990Aug13.185757.3236@sti.fi> ttl@sti.fi (Timo Lehtinen) writes:
>This might be trivial, but here goes...
>What's the most optimal way to reverse the bits in an unsigned char,
>i.e. change from MSB to LSB ordering ?
>
    If by optimal, you mean fastest with the least code, try a char[256]
array with the bits already reversed.  You just look 'em up.  (It may be
gross, but the table+code is often smaller than the conversion code).