isInfinite

expect fun Double.isInfinite(): Boolean(source)

fun main() {
    val posInf = Double.POSITIVE_INFINITY
    val negInf = Double.NEGATIVE_INFINITY
    val finite = 42.0

    println("Is $posInf infinite? ${posInf.isInfinite()}")
    println("Is $negInf infinite? ${negInf.isInfinite()}")
    println("Is $finite infinite? ${finite.isInfinite()}")
}