Re: [Haskell-cafe] Re: Double -> CDouble, realToFrac doesn't work

I would be very careful of adding non-rationals to the Rational type.

Why is there no Irrational class. This would make more sense for Floats and Doubles than the fraction based Rational class. We could also add an implementation of infinite precision irrationals using a pair of Integers for exponent and mantissa. Keean.