Re: [R] acos(0.5) == pi/3 FALSE

From: Douglas Bates <bates_at_stat.wisc.edu>
Date: Mon 18 Sep 2006 - 21:13:17 GMT

On 9/18/06, Iņaki Murillo Arcos <inaki.murillo@ehu.es> wrote:
> Hello,
>
> I don't know if the result of
>
> acos(0.5) == pi/3
>
> is a bug or not. It looks strange to me.

However,

> all.equal(acos(0.5), pi/3)
[1] TRUE so you may want to check the FAQ entry on comparisons involving floating point numbers.



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