From ripley at stats.ox.ac.uk  Mon Jul 16 12:43:01 2007
From: ripley at stats.ox.ac.uk (ripley at stats.ox.ac.uk)
Date: Mon, 16 Jul 2007 12:43:01 +0200 (CEST)
Subject: [Rd] error in trunc function (PR#9782)
Message-ID: <20070716104301.BC5135D609@slim.kubism.ku.dk>

The result is correct.  The representation of 2.3 is slightly less than 
2.3: non-binary fractions cannot be represented exactly.

> 2.3*100 - 230
[1] -2.842171e-14

On Fri, 6 Jul 2007, focus17 at libero.it wrote:

> Full_Name: Claudio
> Version: 2.5.1
> OS: windows
> Submission from: (NULL) (157.138.120.198)
>
>
> the command get a wrong result
>
>> trunc(2.3*100)
> 229
>
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> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



[Rd] error in trunc function (PR#9782)
ripley at stats.ox.ac.uk