[R] -1.1 - 0.1 + 1.2 is NOT null! Why?

[Rolf Turner]

In addition to taking cognisance of Richard Heiberger's reply you
should also learn to distinguish between the concept of "null" and
"zero".  They are not at all the same thing.

     cheers,

         Rolf Turner

On 11/07/12 08:17, ollestrat wrote:
> Hello,
>
> I fear its a stupid question,..but here it is:
>
> If I do this simple calculation with the R  console, I surprisingly do not
> get a zero. Why?
>
>   -1.1-0.1+1.2
> [1] -2.220446e-16
>
>
> greetings, Ole