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From: tim@ism780c.UUCP (Tim Smith)
Newsgroups: net.arch
Subject: Re: Right shift vs. divide
Message-ID: <231@ism780c.UUCP>
Date: Fri, 10-Jan-86 16:33:39 EST
Article-I.D.: ism780c.231
Posted: Fri Jan 10 16:33:39 1986
Date-Received: Mon, 13-Jan-86 07:57:16 EST
References: <4772@alice.UUCP> <3000002@convexs>
Reply-To: tim@ism780c.UUCP (Tim Smith)
Organization: Interactive Systems Corp., Santa Monica, CA
Lines: 16

In article <3000002@convexs> wallach@convexs.UUCP writes:
>
>arithmetic right shifting is equivalent(numerically) to division if the
>algorithm is implemented correctly.  just because most machines do it
>wrong doesn't mean it doesn't work.  the correct algorithm for right
>shifting for fixed point is:
>
.
.
>the MV series from data general perform arithmetic right shifting
>correctly

Argghhh!  It is division that is wrong, not right shift!  -1/2 should
be -1, not 0.  Don't hardware people ever take math courses?
-- 
Tim Smith       sdcrdcf!ism780c!tim || ima!ism780!tim || ihnp4!cithep!tim