Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site sdcrdcf.UUCP
Path: utzoo!watmath!clyde!cbosgd!ukma!psuvm.bitnet!psuvax1!burdvax!sdcrdcf!doon
From: doon@sdcrdcf.UUCP (Harry W. Reed)
Newsgroups: net.arch
Subject: Re: Right shift vs. divide
Message-ID: <2567@sdcrdcf.UUCP>
Date: Fri, 10-Jan-86 19:56:58 EST
Article-I.D.: sdcrdcf.2567
Posted: Fri Jan 10 19:56:58 1986
Date-Received: Tue, 14-Jan-86 03:24:25 EST
References: <4772@alice.UUCP> <3000002@convexs> <231@ism780c.UUCP>
Reply-To: doon@sdcrdcf.UUCP (Harry W. Reed)
Organization: System Development Corporation R&D, Santa Monica
Lines: 19

In article <231@ism780c.UUCP> tim@ism780c.UUCP (Tim Smith) writes:
>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?
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Where I went to school, us hardware people had to take MUCH more math
than the software people!!   (EE Vs. CS) So math is not the problem ...