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Re: polyfit weirdness


From: Etienne Grossmann
Subject: Re: polyfit weirdness
Date: Tue, 11 Feb 2003 17:58:11 +0000
User-agent: Mutt/1.3.28i

On Tue, Feb 11, 2003 at 06:08:55PM +0100, Miquel Cabanas wrote:
# hi,
# 
# 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
# running.
# 
# Which OS, platform and Octave version are you using? Did you
# compile it yourself? If not, where did you get it from?

  Plain 2.1.44 compiled here, Debian Woody, Linux 2.2.15 kernel, PII.
 
# Miquel
# 
# -- 
# Miquel E Cabanas ------------------------------------------------------
# SeRMN, Universitat Autonoma de Barcelona (address@hidden)
# ------------------------------------------o-oo--ooo---ooo--oo-o--------
# 
# 
# 
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-- 
Etienne Grossmann ------ http://www.isr.ist.utl.pt/~etienne



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