Sure. BigInteger.doubleValue() casts to infinity if the value is too
large to be represented:

user> (double (fact 1000))
Infinity

You could try this using BigDecimals instead of doubles:

user> (+ 0.5M (fact 1000))

-Per

On Sat, Oct 9, 2010 at 11:08 AM, Miki <miki.teb...@gmail.com> wrote:
> If the following intentional?
>
> user=> (defn fact [n] (reduce * 1 (range 1 (inc n))))
> #'user/fact
> user=> (fact 1000)
> 402387260077093773543702433923003985719374864210714632543799910.......
> user=> (+ 0.5 (fact 1000))
> Infinity
>
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