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test/runtime/Unsafe/GetPutDouble.java

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   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verify behaviour of Unsafe.get/putDouble
  27  * @library /testlibrary
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main GetPutDouble
  31  */
  32 
  33 import java.lang.reflect.Field;
  34 import jdk.test.lib.*;
  35 import jdk.internal.misc.Unsafe;
  36 import static jdk.test.lib.Asserts.*;
  37 
  38 public class GetPutDouble {
  39     public static void main(String args[]) throws Exception {
  40         Unsafe unsafe = Utils.getUnsafe();
  41         Test t = new Test();
  42         Field field = Test.class.getField("d");
  43 
  44         long offset = unsafe.objectFieldOffset(field);
  45         assertEquals(-1.0, unsafe.getDouble(t, offset));
  46         unsafe.putDouble(t, offset, 0.0);
  47         assertEquals(0.0, unsafe.getDouble(t, offset));
  48 
  49         long address = unsafe.allocateMemory(8);
  50         unsafe.putDouble(address, 1.0);
  51         assertEquals(1.0, unsafe.getDouble(address));
  52         unsafe.freeMemory(address);
  53 
  54         double arrayDouble[] = { -1.0, 0.0, 1.0, 2.0 };


   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Verify behaviour of Unsafe.get/putDouble
  27  * @library /test/lib
  28  * @modules java.base/jdk.internal.misc
  29  *          java.management
  30  * @run main GetPutDouble
  31  */
  32 
  33 import java.lang.reflect.Field;
  34 import jdk.test.lib.Utils;
  35 import jdk.internal.misc.Unsafe;
  36 import static jdk.test.lib.Asserts.*;
  37 
  38 public class GetPutDouble {
  39     public static void main(String args[]) throws Exception {
  40         Unsafe unsafe = Utils.getUnsafe();
  41         Test t = new Test();
  42         Field field = Test.class.getField("d");
  43 
  44         long offset = unsafe.objectFieldOffset(field);
  45         assertEquals(-1.0, unsafe.getDouble(t, offset));
  46         unsafe.putDouble(t, offset, 0.0);
  47         assertEquals(0.0, unsafe.getDouble(t, offset));
  48 
  49         long address = unsafe.allocateMemory(8);
  50         unsafe.putDouble(address, 1.0);
  51         assertEquals(1.0, unsafe.getDouble(address));
  52         unsafe.freeMemory(address);
  53 
  54         double arrayDouble[] = { -1.0, 0.0, 1.0, 2.0 };
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