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Re: R: float to integer conversion anomalies
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From: |
Levente Torok |
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Subject: |
Re: R: float to integer conversion anomalies |
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Date: |
Tue, 30 Jun 2009 12:36:02 +0200 |
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User-agent: |
KMail/1.11.4 (Linux/2.6.28-13-generic; KDE/4.2.4; x86_64; ; ) |
On Tuesday 30 June 2009, you wrote:
>
> > May be I am commenting something that has already been
> > reported or even solved.
> > On octave-3.0.5 I found a somewhat inconsistent behavior.
> >
> > octave:2> for i=.1:.1:2
> > > i*10
> > > endfor
> > ans = 1
> > ans = 2
> > ans = 3..00000000000000 <-????
> > ans = 4
> > ans = 5
>
> may I suggest
> for i=.1:.1:2
> round(i*10)
> endfor
>
> You are missing some ground on 0.3 representation in base 2.
> It is a periodic number so must be truncated.
Sounds reasonable from programming point of view however not from the point of
the user who doesn't know much
about radixes. Or should he?
Lev
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