Division in Haskell, Type class

Question

I have a function which, taken two ints as paramters, should return the result of their division.

I am, however, unsure about a few things.

Firstly, what the return type would be? Ie, 4/2 would return 2 , therefore I presume an Int , but 5/3 ...? Also what is the best operator to do so?

Answer 1

div is integer division in haskell. It will round down like C would do. So

4 `div` 2 = 2
5 `div` 3 = 1

To do regular division you have to convert to a Fractional type with fromIntegral .

(/) :: Fractional a => a -> a -> a

So the (/) operator takes two Fractional types and returns the same fractional type. Examples would be Rational , Double , and Float .