Math Common
Math conventions to reduce boilerplate code. Useful for rounding values:
import java.math.RoundingMode
val rounding = Rounding.to(2, RoundingMode.FLOOR)
rounding.round(1.257) // 1.25
rounding.round(1.253) // 1.25
// Alternatively:
1.257.round(rounding) // 1.25
1.253.round(rounding) // 1.25Content copied to clipboard
You can also just pass the number of desired decimal places to round, in which case HALF_UP is used as the rounding mode:
1.257.round(2) // 1.26Content copied to clipboard
To round the result of a calculation, pass a function block to the round method:
Rounding.to(2).round { 3.14159 * 10.0.squared() } // 314.16
// Alternatively:
{ 3.14159 * 10.0.squared() }.round(2) // 314.16Content copied to clipboard
Exponentiation
The extension functions squared and cubed are available for simple math operations with Double, Float, Long, and Int:
2.squared() // 4
2.0.cubed() // 8.0Content copied to clipboard