1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   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  * @bug 8026844
  27  * @summary Test repeating multiplyExact

  28  * @compile MulExactIRepeatTest.java Verify.java
  29  * @run main MulExactIRepeatTest
  30  *
  31  */
  32 



  33 public class MulExactIRepeatTest {
  34     public static void main(String[] args) {
  35         runTest(new Verify.MulExactI());
  36     }
  37 
  38     public static int nonExact(int x, int y, Verify.BinaryMethod method) {
  39         int result = method.unchecked(x, y);
  40         result += method.unchecked(x, y);
  41         result += method.unchecked(x, y);
  42         result += method.unchecked(x, y);
  43         return result;
  44     }
  45 
  46     public static void runTest(Verify.BinaryMethod method) {
  47         java.util.Random rnd = new java.util.Random();
  48         for (int i = 0; i < 50000; ++i) {
  49             int x = Integer.MAX_VALUE - 10;
  50             int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
  51 
  52             int c = rnd.nextInt() / 10;
  53             int d = rnd.nextInt(9);
  54 
  55             int a = catchingExact(x, y, method);
  56 
  57             if (a != 36) {
  58                 throw new RuntimeException("a != 36 : " + a);
  59             }
  60 
  61             int b = nonExact(c, d, method);
  62             int n = exact(c, d, method);
  63 
  64 
  65             if (n != b) {
  66                 throw new RuntimeException("n != b : " + n + " != " + b);
  67             }

   1 /*
   2  * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   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  * @bug 8026844
  27  * @summary Test repeating multiplyExact
  28  * @library /testlibrary
  29  * @compile MulExactIRepeatTest.java Verify.java
  30  * @run main MulExactIRepeatTest
  31  *
  32  */
  33 
  34 import com.oracle.java.testlibrary.Utils;
  35 import java.util.Random;
  36 
  37 public class MulExactIRepeatTest {
  38     public static void main(String[] args) {
  39         runTest(new Verify.MulExactI());
  40     }
  41 
  42     public static int nonExact(int x, int y, Verify.BinaryMethod method) {
  43         int result = method.unchecked(x, y);
  44         result += method.unchecked(x, y);
  45         result += method.unchecked(x, y);
  46         result += method.unchecked(x, y);
  47         return result;
  48     }
  49 
  50     public static void runTest(Verify.BinaryMethod method) {
  51         Random rnd = Utils.getRandomInstance();
  52         for (int i = 0; i < 50000; ++i) {
  53             int x = Integer.MAX_VALUE - 10;
  54             int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
  55 
  56             int c = rnd.nextInt() / 10;
  57             int d = rnd.nextInt(9);
  58 
  59             int a = catchingExact(x, y, method);
  60 
  61             if (a != 36) {
  62                 throw new RuntimeException("a != 36 : " + a);
  63             }
  64 
  65             int b = nonExact(c, d, method);
  66             int n = exact(c, d, method);
  67 
  68 
  69             if (n != b) {
  70                 throw new RuntimeException("n != b : " + n + " != " + b);
  71             }