Nan.java

public class Nan {
	static void f(double a) {
		long t0 = System.nanoTime();
		double acc = a;
		for (int i = 0; i < 100000000; i++) {
			acc += i;
		}
		long t1 = System.nanoTime();
		System.out.println("time:" + (t1 - t0) / 1000000 + " " + acc);
	}
	public static void main(String[] args) {
		for (int i = 0; i < 3; i++) {
			f(0d);
			f(0d);
			f(Double.NaN);
			f(Double.POSITIVE_INFINITY);
		}
	}
//time:95 4.99999995E15
//time:96 4.99999995E15
//time:101 NaN
//time:101 Infinity
//time:100 4.99999995E15
//time:100 4.99999995E15
//time:104 NaN
//time:98 Infinity
//time:95 4.99999995E15
//time:96 4.99999995E15
//time:116 NaN
//time:96 Infinity
}