Re: True probabilistic rounding [was Re: Precision ...]

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Article #6544

#6544

From: Russell Wallace
Date: Wed, 01 Oct 2003 11:18

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On 1 Oct 2003 07:38:25 GMT, nmm1@cus.cam.ac.uk (Nick Maclaren) wrote:

[explanation snipped]

>This is why hardware designers go to great trouble (and it IS great
>trouble) to support rounding.

So basically, for an individual operation it indeed doesn't much
matter, but for large calculations you want to use a rounding mode
chosen so that the sum of all the errors will average out as close as
possible to zero. Okay, that makes sense, thanks.

-- 
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From: wallacethinmintr@eircom.net (Russell Wallace)
Newsgroups: comp.lang.fortran,comp.arch,bit.listserv.ibm-main
Subject: Re: True probabilistic rounding [was Re: Precision ...]
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