Re: IEEE arithmetic (Goldberg paper)

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Article #11965

#11965

From: Henry Spencer
Date: Thu, 06 Jun 1991 16:41

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In article <26594@as0c.sei.cmu.edu> firth@sei.cmu.edu (Robert Firth) writes:
>In otherwords: yes, Jim Dehnert is fully entitled to replace 0.0*X
>with the mathematically equivalent expression 0.0...

Uh, sorry, if the number system you are using includes infinities, those
two expressions are *not* mathematically equivalent.  I don't remember
whether X3.9 pins down the number system in sufficient detail to preclude
this, although I doubt it, since infinities have been around in some
floating-point boxes for a long time.
-- 
"We're thinking about upgrading from    | Henry Spencer @ U of Toronto Zoology
SunOS 4.1.1 to SunOS 3.5."              |  henry@zoo.toronto.edu  utzoo!henry

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Newsgroups: comp.arch
Path: arc1-ca.pugleaf.net!utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: IEEE arithmetic (Goldberg paper)
Message-ID: <1991Jun6.164132.28220@zoo.toronto.edu>
Date: Thu, 6 Jun 1991 16:41:32 GMT
References: <9106052113.AA14439@ucbvax.Berkeley.EDU> <26594@as0c.sei.cmu.edu>
Organization: U of Toronto Zoology

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