809N/A/*
2362N/A * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
809N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
809N/A *
809N/A * This code is free software; you can redistribute it and/or modify it
809N/A * under the terms of the GNU General Public License version 2 only, as
809N/A * published by the Free Software Foundation.
809N/A *
809N/A * This code is distributed in the hope that it will be useful, but WITHOUT
809N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
809N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
809N/A * version 2 for more details (a copy is included in the LICENSE file that
809N/A * accompanied this code).
809N/A *
809N/A * You should have received a copy of the GNU General Public License version
809N/A * 2 along with this work; if not, write to the Free Software Foundation,
809N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
809N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
809N/A */
809N/A
809N/A/*
809N/A * @test
809N/A * @bug 4916097
809N/A * @summary Some exponent over/undeflow tests for the pow method
809N/A * @author Joseph D. Darcy
809N/A */
809N/A
809N/Aimport java.math.*;
809N/A
809N/Apublic class PowTests {
809N/A static int zeroAndOneTests() {
809N/A int failures = 0;
809N/A
809N/A BigDecimal[][] testCases = {
809N/A {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)},
809N/A {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(1), BigDecimal.valueOf(0, Integer.MAX_VALUE)},
809N/A {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(2), BigDecimal.valueOf(0, Integer.MAX_VALUE)},
809N/A {BigDecimal.valueOf(0, Integer.MAX_VALUE), new BigDecimal(999999999), BigDecimal.valueOf(0, Integer.MAX_VALUE)},
809N/A
809N/A {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)},
809N/A {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(1), BigDecimal.valueOf(0, Integer.MIN_VALUE)},
809N/A {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(2), BigDecimal.valueOf(0, Integer.MIN_VALUE)},
809N/A {BigDecimal.valueOf(0, Integer.MIN_VALUE), new BigDecimal(999999999), BigDecimal.valueOf(0, Integer.MIN_VALUE)},
809N/A
809N/A {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)},
809N/A {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(1), BigDecimal.valueOf(1, Integer.MAX_VALUE)},
809N/A {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(2), null}, // overflow
809N/A {BigDecimal.valueOf(1, Integer.MAX_VALUE), new BigDecimal(999999999), null}, // overflow
809N/A
809N/A {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(0), BigDecimal.valueOf(1, 0)},
809N/A {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(1), BigDecimal.valueOf(1, Integer.MIN_VALUE)},
809N/A {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(2), null}, // underflow
809N/A {BigDecimal.valueOf(1, Integer.MIN_VALUE), new BigDecimal(999999999), null}, // underflow
809N/A };
809N/A
809N/A for(BigDecimal[] testCase: testCases) {
809N/A int exponent = testCase[1].intValueExact();
809N/A BigDecimal result;
809N/A
809N/A try{
809N/A result = testCase[0].pow(exponent);
809N/A if (!result.equals(testCase[2]) ) {
809N/A failures++;
809N/A System.err.println("Unexpected result while raising " +
809N/A testCase[0] +
809N/A " to the " + exponent + " power; expected " +
809N/A testCase[2] + ", got " + result + ".");
809N/A }
809N/A } catch (ArithmeticException e) {
809N/A if (testCase[2] != null) {
809N/A failures++;
809N/A System.err.println("Unexpected exception while raising " + testCase[0] +
809N/A " to the " + exponent + " power.");
809N/A
809N/A }
809N/A }
809N/A }
809N/A
809N/A return failures;
809N/A }
809N/A
809N/A public static void main(String argv[]) {
809N/A int failures = 0;
809N/A
809N/A failures += zeroAndOneTests();
809N/A
809N/A if (failures > 0) {
809N/A throw new RuntimeException("Incurred " + failures +
809N/A " failures while testing pow methods.");
809N/A }
809N/A }
809N/A
809N/A}