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 31import java.math.*; 32import static java.math.BigDecimal.*; 33 34public 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} 99