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From: jmc@ist.UUCP (John Collins)
Newsgroups: net.micro.68k,net.micro
Subject: Re: MC68881 Floating-point performance times
Message-ID: <276@ist.UUCP>
Date: Thu, 20-Dec-84 16:28:58 EST
Article-I.D.: ist.276
Posted: Thu Dec 20 16:28:58 1984
Date-Received: Sun, 23-Dec-84 00:44:47 EST
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Organization: Imperial Software Technology, London, England
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Xref: watmath net.micro.68k:497 net.micro:8964

I remember in my student days using an IBM 370/165 and discovering that
double was FASTER than single precision floating, since the microcode
did everything in double precision and the single ops were done by padding
the operands and truncating the results.....

Maybe that is the rationale for C working in double....

(What was fun was when some user rang up when I was doing "progam advisor"
duty and said "How much slower will my program run if I run it in double
precision" - a silly question to which I could truthfully answer "It'll
run faster!!)
-- 
John Collins calling courtesy of ist
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