How to test if a Float or Double is infinite or NaN?

Question

In Java there is an API to test if a number is infinite or NaN.

I cannot find anything like this in Scala, and to call the Java functions it seems I need to box the value or to call java.lang.Double static method:

Double.box(x).isNaN

java.lang.Double.isNaN(x)

Is there really nothing more "native" to Scala to test for infiniteness / NaN-ness?

Answer 1

These are methods on the boxed scala.Double. No need to manually box them.

scala> 1.2.isNaN
res1: Boolean = false

scala> 1.2.isInfinity
res2: Boolean = false

scala> (0.0 / 0.0).isNaN
res8: Boolean = true

scala> (1.0 / 0.0).isInfinity
res5: Boolean = true