Calling java.lang.Math.pow() under patchset 8 of the native 1.3.1 JDK yields incorrect results in certain cases. The following tests were performed:

2^10 = 0
2^5 = 0
2^1 = 2
2^0.5 = 1.414214
2^0 = 1
2^-0 = 1
2^-0.5 = 0
2^-1 = 0.5
2^-5 = 0
2^-10 = 0

-2^10 = 1024
-2^5 = -32
-2^1 = -2
-2^0.5 = NaN
-2^0 = 1
-2^-0 = 1
-2^-0.5 = NaN
-2^-1 = -0.5
-2^-5 = -0.03125
-2^-10 = 9.765625E-4

How-To-Repeat: Run the following code:

        public class TestPow
        {
                public static void main(String args[]) throws Exception
                {
                        System.out.println("Math.pow(2.0,10.0) = " + Math.pow(2.0,10.0));
                }
        }

It prints the following:

        Math.pow(2.0,10.0) = 0.0

It should print the following:

        Math.pow(2.0,10.0) = 1024.0