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module Number
( format
, roundAt
) where
import Data.Int (round, toNumber, pow) as Int
import Data.String (Pattern(..), Replacement(..))
import Data.String (replace) as String
import Math (round) as Math
import Prelude
format :: Number -> String
format number =
if Math.round number == number then
show (Int.round number)
else
String.replace (Pattern ".") (Replacement ",") (show (roundAt 1 number))
roundAt :: Int -> Number -> Number
roundAt at n =
let exp = Int.toNumber (Int.pow 10 at)
in Math.round (n * exp) / exp
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