Show class on ADT with function

[Mike Jones]

Hi,

I want to put a function in an ADT and make the ADT an instance of Show.
Like the following small example:

data Fn = Fn (Float -> Float) Int
        deriving Show

But, I get the error from GHC as follows:

Stimulus.hs:12:
    No instance for `Show (Float -> Float)'
    When deriving classes for `Fn'

Compilation had errors

make: *** [Stimulus.o] Error 1

Is there any way to do this? Note that it would be ok to generate blank
text.

Thanks,

Mike