This is a FAQ.

Try this:

all.equal(0.7-0.3, 0.4)

On Mon, Apr 20, 2009 at 10:07 AM, wolfgang.siewert <
wolfgang.siewert@gmail.com> wrote:

>
> Try this:
>
> 0.7-0.3==0.4
> (We get FALSE)
> 0.7-0.3<0.4
> (We get TRUE)
>
> but
> 0.8-0.3==0.5
> (TRUE)
> 0.8-0.3<0.5
> (FALSE)
>
> Funny, he?
>
> There is a way around:
> round(0.7-0.3,1)==0.4
> (TRUE)
>
> Obviously there is a problem with some combinations of decimal
> subtractions,
> that - we have the feeling - shouldt be solved.
>
> Best regards
> Sven & Wolfgang
> --
> View this message in context:
> http://www.nabble.com/bug-when-subtracting-decimals--tp23136337p23136337.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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