[R] Why does sin(pi) not return 0?

[Rolf Turner]

On 09/26/13 19:31, Babak Bastan wrote:
> Hi experts,
>
> If I test sin(pi) in r, it returns me 1.224606e-16
>
> Why doesn't return me 0?

If you think that 1.224606e-16 is different from 0, you should probably not
be using computers.  See FAQ 7.31 (which is in a way about the inverse of
your question, but it should provide the necessary insight).

     cheers,

     Rolf Turner