test/compiler/6539464/Test.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 */

/**
 * @test
 * @bug 6539464
 * @summary Math.log() produces inconsistent results between successive runs.
 *
 * @run main/othervm -Xcomp -XX:CompileOnly=Test.main Test
 */

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) {
                throw new InternalError("Math.log produces inconsistent results: " + log_result2 + " != " + log_result);
            }
        }
    }
}