Re: [Haskell-cafe] about integer and float operations

4 Feb 2009


      Ross Mellgren ha scritto:
...
Prelude> let i2fDiv a b = fromIntegral a / fromIntegral b
Prelude> :t i2fDiv
i2fDiv :: (Integral a, Fractional b, Integral a1) =>
                 a -> a1 -> b
Prelude> 10 `i2fDiv` 3
3.3333333333333335
Prelude> fac 777 `i2fDiv` fac 777
NaN
...
That what you're looking for?
No.
I'm looking for an exact integer division that avoids overflows, if 
possible.
...
-Ross
Manlio Perillo