[Bug 500] Shark on ARM Math.log incosistent results

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http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=500





------- Comment #1 from xerxes at zafena.se  2010-05-24 09:16 -------
I tweaked the testcase to print the hexadecimal form of the generated results
using Double.toHexString() :

public class Test {
    static double log_value = 17197;
    static double log_result = Math.log(log_value);

    public static void main(String[] args) throws Exception {
        for (int i = 0; i < 1000000; i++) {
            double log_result2 = Math.log(log_value);
            if (log_result2 != log_result) {
                System.out.println("javac: "+Double.toHexString(log_result)+"
jit: "+Double.toHexString(log_result2));
                throw new InternalError("Math.log produces inconsistent
results: " + log_result2 + " != " + log_result);
            }
        }
    }
}


outputs:
$ java -Xcomp -XX:CompileOnly=Test.main Test
javac: 0x1.38146663817e8p3 jit: 0x1.38146663817e7p3
Exception in thread "main" java.lang.InternalError: Math.log produces
inconsistent results: 9.752490228984199 != 9.7524902289842


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