[R] Rounding

[Achim Zeileis]

On Sat, 5 Jan 2013, David Arnold wrote:

> Hi,
>
> Can someone explain this:
>
>> options(digits=20)
>> 1/3
> [1] 0.33333333333333331483
>
> Why the 1483 at the end?

Due to floating-point arithmetic, see FAQ 7.31.

> Thanks,
>
> David.
>
> david-arnolds-macbook-pro-2:~ darnold$ R --version
> R version 2.15.2 (2012-10-26) -- "Trick or Treat"
> Copyright (C) 2012 The R Foundation for Statistical Computing
> ISBN 3-900051-07-0
> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
>
>
>
>
> --
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