[Rd] potential r bug (floor)

[kjetil brinchmann halvorsen]

On 23 Jun 2003 at 20:20, Prof Brian D Ripley wrote:

> Why is this a bug?  If you take apply floor to a number that you expect to
> be exactly 3, but compute it on a binary computer via logs to base e, you
> must expect some rounding error.
> 
> BTW, on my Windows XP machine I do get
> 
> > floor(log10(1000))
> [1] 3
> 
 
On my windows XP machine (R1.7.1) i get:

> floor( log10(1000) )
[1] 2


Why this difference between different XP machines?

Kjetil Halvorsen