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Re: polyfit weirdness

From: Miquel Cabanas
Subject: Re: polyfit weirdness
Date: Tue, 11 Feb 2003 18:08:55 +0100
User-agent: Mutt/1.3.28i


On Tue, Feb 11, 2003 at 10:25:12AM -0600, Scott Lamb wrote:
> Etienne Grossmann wrote:
> >     A problem with order of magnitude of f1 and floating-point
> >     limitations?
> >
> >cv1 =
> >  0.66528  0.79417  1.37189  1.59260  1.92606
> >
> >     Is that more like what you expected?
> Yes, it is, thanks.
> I'm a little disappointed Octave has this problem; I'd assumed
> it would be using gmp or something for arbitrary precision.
> Oh well.

your example works perfectly well on my PC running GNU/Debian
3.0r1 as you wrote it, i.e. without scaling f1 as Etienne
suggested. Thus, I would say this is not a problem of Octave
itself, but probably a problem of the particular version you're

Which OS, platform and Octave version are you using? Did you
compile it yourself? If not, where did you get it from?


Miquel E Cabanas ------------------------------------------------------
SeRMN, Universitat Autonoma de Barcelona (address@hidden)

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