A modern programming language that makes developers happier.

kotlinlang

<https://pl.kotl.in/urxAUO4rz> :this-is-fine:
```val a: Double = Double.NaN
println(a == a) // false
val b: Number = a
println(a == b) // true
val c: Double = 0.0
println(c == -c) // true
val d: Number = c
println(d == -c) // false```
(yes, I know why this has to happen for IEEE 754 and boxed equals() reasons, it's a _fun_ puzzler to figure out if you don't know why though)

In Java plugin there is even a “Java | Numeric issues | Floating point equality comparison” inspection, not for Kotlin though.

FTR, <https://kotlinlang.org/docs/numbers.html#floating-point-numbers-comparison>