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Re: Possible loss of accuracy


From: John W. Eaton
Subject: Re: Possible loss of accuracy
Date: Wed, 15 May 2013 13:26:30 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.11) Gecko/20121122 Icedove/10.0.11

On 05/15/2013 01:11 PM, Sergei Steshenko wrote:

IIRC, on x86-64 80 bit FP registers are _not_ used.

Is you machine by any chance a 64 bit one ?

Yes. Also, Octave doesn't do the kinds of expression optimizations that are typically done by a Fortran compiler, so each subexpression is computed and the result is stored to memory. So that could explain differences as well.

jwe




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