1   /*
2    * Copyright (c) 2006, 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 6850606
27   * @summary Test BigDecimal.multiply(BigDecimal)
28   * @author xlu
29   */
30  
31  import java.math.*;
32  import static java.math.BigDecimal.*;
33  
34  public class MultiplyTests {
35  
36      private static int multiplyTests() {
37          int failures = 0;
38  
39          BigDecimal[] bd1 = {
40              new BigDecimal("123456789"),
41              new BigDecimal("1234567898"),
42              new BigDecimal("12345678987")
43          };
44  
45          BigDecimal[] bd2 = {
46              new BigDecimal("987654321"),
47              new BigDecimal("8987654321"),
48              new BigDecimal("78987654321")
49          };
50  
51          // Two dimensonal array recording bd1[i] * bd2[j] &
52          // 0 <= i <= 2 && 0 <= j <= 2;
53          BigDecimal[][] expectedResults = {
54              {new BigDecimal("121932631112635269"),
55               new BigDecimal("1109586943112635269"),
56               new BigDecimal("9751562173112635269")
57              },
58              { new BigDecimal("1219326319027587258"),
59                new BigDecimal("11095869503027587258"),
60                new BigDecimal("97515622363027587258")
61              },
62              { new BigDecimal("12193263197189452827"),
63                new BigDecimal("110958695093189452827"),
64                new BigDecimal("975156224183189452827")
65              }
66          };
67  
68          for (int i = 0; i < bd1.length; i++) {
69              for (int j = 0; j < bd2.length; j++) {
70                  if (!bd1[i].multiply(bd2[j]).equals(expectedResults[i][j])) {
71                      failures++;
72                  }
73              }
74          }
75  
76          BigDecimal x = BigDecimal.valueOf(8L, 1);
77          BigDecimal xPower = BigDecimal.valueOf(-1L);
78          try {
79              for (int i = 0; i < 100; i++) {
80                  xPower = xPower.multiply(x);
81              }
82          } catch (Exception ex) {
83              failures++;
84          }
85          return failures;
86      }
87  
88      public static void main(String[] args) {
89          int failures = 0;
90  
91          failures += multiplyTests();
92  
93          if (failures > 0) {
94              throw new RuntimeException("Incurred " + failures +
95                                         " failures while testing multiply.");
96          }
97      }
98  }