Question

I have a program that tries to shrink a double down to a desired number. The output I get is NaN.

What does NaN mean in Java?

Answer 1

Taken from this page:

“NaN” stands for “not a number”. “Nan”
is produced if a floating point
operation has some input parameters
that cause the operation to produce
some undefined result. For example,
0.0 divided by 0.0 is arithmetically undefined. Taking the square root of a
negative number is also undefined.