[R] cube root of a negative number

[Jeff Newmiller]

Because it is implemented as

antilog((1/3)*log(-4))

most likely using base 2 for the log/antilog functions.

"Gregory Ryslik" <rsaber at comcast.net> wrote:

>Hi,
>
>This might be me missing something painfully obvious but why does the
>cube root of the following produce an NaN?
>
>> (-4)^(1/3)
>[1] NaN
>> 
>
>As we can see:
>
>> (-1.587401)^3
>[1] -4
>
>Thanks!
>
>Greg
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