round

In std/math.

fn round(self: Float) : Float

The whole number nearest self, as a Float; a value halfway between two rounds away from zero: 2.5f | round is 3.0.

fn round(self: Decimal) : Decimal
fn round(self: Decimal, places: Int) : Decimal

self rounded half to even to places digits after the point, and kept at that scale: round(2.345, 2) is 2.34, and round(x) is round(x, 0). See Division and rounding.