jdk8-mips64-public/hotspot: test/compiler/intrinsics/mathexact/MulExactIRepeatTest.java@f90c822e73f8

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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
changeset: 6782:28b50d07f6f8
tag: jdk8u25-b17

     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  */

    24 /*

    25  * @test

    26  * @bug 8026844

    27  * @summary Test repeating multiplyExact

    28  * @compile MulExactIRepeatTest.java Verify.java

    29  * @run main MulExactIRepeatTest

    30  *

    31  */

    33 public class MulExactIRepeatTest {

    34     public static void main(String[] args) {

    35         runTest(new Verify.MulExactI());

    36     }

    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     }

    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);

    52             int c = rnd.nextInt() / 10;

    53             int d = rnd.nextInt(9);

    55             int a = catchingExact(x, y, method);

    57             if (a != 36) {

    58                 throw new RuntimeException("a != 36 : " + a);

    59             }

    61             int b = nonExact(c, d, method);

    62             int n = exact(c, d, method);

    65             if (n != b) {

    66                 throw new RuntimeException("n != b : " + n + " != " + b);

    67             }

    68         }

    69     }

    71     public static int exact(int x, int y, Verify.BinaryMethod method) {

    72         int result = 0;

    73         result += method.checkMethod(x, y);

    74         result += method.checkMethod(x, y);

    75         result += method.checkMethod(x, y);

    76         result += method.checkMethod(x, y);

    77         return result;

    78     }

    80     public static int catchingExact(int x, int y, Verify.BinaryMethod method) {

    81         int result = 0;

    82         try {

    83             result += 5;

    84             result = method.checkMethod(x, y);

    85         } catch (ArithmeticException e) {

    86             result += 1;

    87         }

    88         try {

    89             result += 6;

    91             result += method.checkMethod(x, y);

    92         } catch (ArithmeticException e) {

    93             result += 2;

    94         }

    95         try {

    96             result += 7;

    97             result += method.checkMethod(x, y);

    98         } catch (ArithmeticException e) {

    99             result += 3;

   100         }

   101         try {

   102             result += 8;

   103             result += method.checkMethod(x, y);

   104         } catch (ArithmeticException e) {

   105             result += 4;

   106         }

   107         return result;

   108     }

   109 }

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