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From: ka@hou3c.UUCP (Kenneth Almquist)
Newsgroups: net.unix-wizards
Subject: Re:  Compact/Uncompact
Message-ID: <691@hou3c.UUCP>
Date: Thu, 12-Jul-84 17:17:58 EDT
Article-I.D.: hou3c.691
Posted: Thu Jul 12 17:17:58 1984
Date-Received: Fri, 13-Jul-84 04:44:03 EDT
References: <1599@sri-arpa.UUCP>
Organization: Bell Labs, Holmdel, NJ
Lines: 6

Even the System V pack/unpack can be improved.  The unpack code processes
one bit at a time; I got about a fourfold speed improvement by modifying
the code to pull off 8 bit chunks.  Before that I recoded the unpack routine
in PDP-11 assembly language which resulted in a comparable performance
improvement without modifying the unpacking algorithm.
				Kenneth Almquist