kotlin-stdlib / kotlin.math / truncate truncate Common JVM JS Native 1.2 fun truncate ( x : Double ) : Double (Common source) (JVM source) (JS source) (Native source) fun truncate ( x : Float ) : Float (Common source) (JVM source) (JS source) (Native source) Rounds the given value x to an integer towards zero. Return the value x having its fractional part truncated. Special cases: truncate(x) is x where x is NaN or +Inf or -Inf or already a mathematical integer.