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

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