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From: saba@ihlpl.UUCP
Newsgroups: net.lang.c
Subject: rotate operators
Message-ID: <1115@ihlpl.UUCP>
Date: Wed, 16-Jul-86 10:25:29 EDT
Article-I.D.: ihlpl.1115
Posted: Wed Jul 16 10:25:29 1986
Date-Received: Thu, 17-Jul-86 05:58:25 EDT
Distribution: net
Organization: AT&T Bell Laboratories
Lines: 14

Since I'm seeing lots of things about compiler specfic operators and
rotate as an example, I'll post some history. C compilers for the
Z80 and MAC-8 (an AT&T 8 bit CPU) used <<< and >>> for rotate.

i = x >>> 3;	/* rotate x right by three bits */
i = y <<< n;	/* rotate y left by n bits */
i >>>= 2;	/* rotate i right by two bits */

You get the idea. This was great when you had to write firmware
that fiddled with hardware registers and such.


Bruce Sabalaskey
ihnp4!ihlpl!saba