[Haskell] for large x, log (x::Integer) :: Double

[MR K P SCHUPKE]

I would think to take an accurate (depends how you define
accurate) arbitrary precision floating point is needed...
gmp 2 supports this, but does not have a log function.

The power series is the way calculators do it... you could
always write a small library of operations on pairs of Integers
to do arbitrary precision floating point, then use the power
series.

Keean.