How to test if a double is zero?

Question

I have some code like this:

class Foo {
    public double x;
}

void test() {
    Foo foo = new Foo();

    // Is this a valid way to test for zero? \'x\' ha         


        

Answer 1

The safest way would be bitwise OR ing your double with 0. Look at this XORing two doubles in Java

Basically you should do if ((Double.doubleToRawLongBits(foo.x) | 0 ) ) (if it is really 0)