kotlin-stdlib / kotlin.math / nextDown nextDown Common JVM JS Native 1.2 fun Double . nextDown ( ) : Double (Common source) (JVM source) (JS source) (Native source) Returns the Double value nearest to this value in direction of negative infinity. JVM Native 1.2 fun Float . nextDown ( ) : Float (JVM source) (Native source) Returns the Float value nearest to this value in direction of negative infinity.