Linux: java.lang.Math.exp method returns incorrect value

Name: skR10017 Date: 05/02/2000



The following test shows incorrect behavior of java.lang.Math.exp method.
This test fails only in Java HotSpot(TM) Client VM (build 1.3.0beta-b01, mixed mode) for linux.
JCK1.3 api/java/lang/Math/exp_test test fails by the same reason.

--------------------------test.java------------------------------
public class test {

    public static void main(String [] args)
    {
        long arg=0xc0855deb851eb854L;
        long expected_result=0x247c7bf4a801836L;
        long result = Double.doubleToLongBits(Math.exp(Double.longBitsToDouble(arg)));
        if(result!=expected_result)
            System.out.println("Failed");
        else System.out.println("Passed");
    }
}
------------------------------------------------------------------

-----------------------------output--------------------------
Linux:

[kotl@linux-4 2May00]$ java -version
java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b03)
Java HotSpot(TM) Client VM (build 1.3.0beta-b01, mixed mode)
[kotl@linux-4 2May00]$ java test
Failed
[kotl@linux-4 2May00]$

Solaris:

bash-2.00$ java -version
java version "1.3.0rc3"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0rc3-Z)
Java HotSpot(TM) Client VM (build 1.3.0rc3-Z, interpreted mode)
bash-2.00$ java test
Passed
bash-2.00$
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