[Haskell-beginners] Generating Random Float

[Giorgio Stefanoni]

Hi guys,

I'm working with Haskell for a little project at the university and I'm
stuck with a problem.

I'm trying to generate a random number in the interval [0.0,1.0]. It is
straightforward for me to implement the function on ints:

rand :: IO Int
rand = do		r <- newStdGen
			let (x1, r2) = randomR (0,1) r
			print x1
			return x1



However, if I try to generate a Float instead, I always get an Arithmetic
Overflow error that I can not understand.

 Code:

rand :: IO Float
rand = do		r <- newStdGen
			let (x1, r2) = randomR (0.0::Float,1.0::Float) r
			print x1
			return x1



Do you have any clue why this happens?

Thanks in advance,


-- 
Giorgio
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