Documentation for method isNaN assembled from the following pages:
Class: Complex §
From Complex
(Complex) method isNaN §
Defined as:
method isNaN(Complex: --> Bool)Returns true if the real or imaginary part is NaN (not a number).
say (NaN+5i).isNaN; # OUTPUT: «True» say (7+5i).isNaN; # OUTPUT: «False»Role: Rational §
From Rational
(Rational) method isNaN §
method isNaN(Rational: --> Bool)Tests whether the invocant's Num value is a NaN, an acronym for Not available Number. That is both its numerator and denominator are zero.