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From: nather@utastro.UUCP (Ed Nather)
Newsgroups: net.micro.68k,net.micro
Subject: Re: MC68881 Floating-point performance times
Message-ID: <896@utastro.UUCP>
Date: Mon, 10-Dec-84 10:41:21 EST
Article-I.D.: utastro.896
Posted: Mon Dec 10 10:41:21 1984
Date-Received: Wed, 12-Dec-84 04:17:42 EST
References: <263@oakhill.UUCP>
Organization: UTexas Astronomy Dept., Austin, Texas
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Xref: watmath net.micro.68k:481 net.micro:8874

[-+-- begone!]

Perhaps the most interesting thing about these timings is that there is
essentially NO PENALTY IN USING DOUBLE vs SINGLE PRECISION in the basic
floating point operations.  There has been much discussion on the net
about whether the C language is flawed because is specifies that all
floating operations be done in double precision, despite the "obvious
gain in speed" that would result in using single precision operations
where they offer enough precision.

Looks like it just depends on whose chip you use.
-- 

                                 Ed Nather
                                 {allegra,ihnp4}!{ut-sally,noao}!utastro!nather
                                 Astronomy Dept., U. of Texas, Austin