[Haskell-cafe] Floating point madness

[Duncan Coutts]

On Mon, 2005-08-29 at 16:59 -0400, Mark Goldman wrote:
> I have looked around the net, and in some reference books and I cannot
> find a function to convert a Float to a Double directly.  Can there
> truly be no such animal in the Prelude/standard libs?

In the Prelude there is

realToFrac :: (Fractional b, Real a) => a -> b

and (Float -> Double) is an instance of this type.

Duncan