1 /* 2 * Copyright (c) 1997, 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 /* @test 25 @bug 4010528 4010529 26 @summary Math.min and Math.max should treat negative zero as strictly 27 less than positive zero 28 */ 29 package test.java.lang.Math; 30 31 import org.testng.annotations.Test; 32 import org.testng.Assert; 33 34 public class MinMax { 35 test(String what, float result, float correctResult)36 static void test(String what, float result, float correctResult) { 37 final String resultString = Float.toString(result); 38 final String correctString = Float.toString(correctResult); 39 final String message = what + ": got " + result + ", expected " + correctResult; 40 Assert.assertEquals(resultString, correctString, message); 41 } 42 test(String what, double result, double correctResult)43 static void test(String what, double result, double correctResult) { 44 final String resultString = Double.toString(result); 45 final String correctString = Double.toString(correctResult); 46 final String message = what + ": got " + result + ", expected " + correctResult; 47 Assert.assertEquals(resultString, correctString, message); 48 } 49 50 @Test testMinMax()51 public void testMinMax() { 52 float fnz = -0.0f; 53 float fpz = +0.0f; 54 55 test("Math.min(fnz, fnz)", Math.min(fnz, fnz), fnz); 56 test("Math.min(fnz, fpz)", Math.min(fnz, fpz), fnz); 57 test("Math.min(fpz, fnz)", Math.min(fpz, fnz), fnz); 58 test("Math.min(fpz, fpz)", Math.min(fpz, fpz), fpz); 59 60 test("Math.min(-1.0f, fnz)", Math.min(-1.0f, fnz), -1.0f); 61 test("Math.min(-1.0f, fpz)", Math.min(-1.0f, fpz), -1.0f); 62 test("Math.min(+1.0f, fnz)", Math.min(+1.0f, fnz), fnz); 63 test("Math.min(+1.0f, fpz)", Math.min(+1.0f, fpz), fpz); 64 test("Math.min(-1.0f, +1.0f)", Math.min(-1.0f, +1.0f), -1.0f); 65 test("Math.min(fnz, -1.0f)", Math.min(fnz, -1.0f), -1.0f); 66 test("Math.min(fpz, -1.0f)", Math.min(fpz, -1.0f), -1.0f); 67 test("Math.min(fnz, +1.0f)", Math.min(fnz, +1.0f), fnz); 68 test("Math.min(fpz, +1.0f)", Math.min(fpz, +1.0f), fpz); 69 test("Math.min(+1.0f, -1.0f)", Math.min(+1.0f, -1.0f), -1.0f); 70 71 test("Math.max(fnz, fnz)", Math.max(fnz, fnz), fnz); 72 test("Math.max(fnz, fpz)", Math.max(fnz, fpz), fpz); 73 test("Math.max(fpz, fnz)", Math.max(fpz, fnz), fpz); 74 test("Math.max(fpz, fpz)", Math.max(fpz, fpz), fpz); 75 76 test("Math.max(-1.0f, fnz)", Math.max(-1.0f, fnz), fnz); 77 test("Math.max(-1.0f, fpz)", Math.max(-1.0f, fpz), fpz); 78 test("Math.max(+1.0f, fnz)", Math.max(+1.0f, fnz), +1.0f); 79 test("Math.max(+1.0f, fpz)", Math.max(+1.0f, fpz), +1.0f); 80 test("Math.max(-1.0f, +1.0f)", Math.max(-1.0f, +1.0f), +1.0f); 81 test("Math.max(fnz, -1.0f)", Math.max(fnz, -1.0f), fnz); 82 test("Math.max(fpz, -1.0f)", Math.max(fpz, -1.0f), fpz); 83 test("Math.max(fnz, +1.0f)", Math.max(fnz, +1.0f), +1.0f); 84 test("Math.max(fpz, +1.0f)", Math.max(fpz, +1.0f), +1.0f); 85 test("Math.max(+1.0f, -1.0f)", Math.max(+1.0f, -1.0f), +1.0f); 86 87 double dnz = -0.0d; 88 double dpz = +0.0d; 89 90 test("Math.min(dnz, dnz)", Math.min(dnz, dnz), dnz); 91 test("Math.min(dnz, dpz)", Math.min(dnz, dpz), dnz); 92 test("Math.min(dpz, dnz)", Math.min(dpz, dnz), dnz); 93 test("Math.min(dpz, dpz)", Math.min(dpz, dpz), dpz); 94 95 test("Math.min(-1.0d, dnz)", Math.min(-1.0d, dnz), -1.0d); 96 test("Math.min(-1.0d, dpz)", Math.min(-1.0d, dpz), -1.0d); 97 test("Math.min(+1.0d, dnz)", Math.min(+1.0d, dnz), dnz); 98 test("Math.min(+1.0d, dpz)", Math.min(+1.0d, dpz), dpz); 99 test("Math.min(-1.0d, +1.0d)", Math.min(-1.0d, +1.0d), -1.0d); 100 test("Math.min(dnz, -1.0d)", Math.min(dnz, -1.0d), -1.0d); 101 test("Math.min(dpz, -1.0d)", Math.min(dpz, -1.0d), -1.0d); 102 test("Math.min(dnz, +1.0d)", Math.min(dnz, +1.0d), dnz); 103 test("Math.min(dpz, +1.0d)", Math.min(dpz, +1.0d), dpz); 104 test("Math.min(+1.0d, -1.0d)", Math.min(+1.0d, -1.0d), -1.0d); 105 106 test("Math.max(dnz, dnz)", Math.max(dnz, dnz), dnz); 107 test("Math.max(dnz, dpz)", Math.max(dnz, dpz), dpz); 108 test("Math.max(dpz, dnz)", Math.max(dpz, dnz), dpz); 109 test("Math.max(dpz, dpz)", Math.max(dpz, dpz), dpz); 110 111 test("Math.max(-1.0d, dnz)", Math.max(-1.0d, dnz), dnz); 112 test("Math.max(-1.0d, dpz)", Math.max(-1.0d, dpz), dpz); 113 test("Math.max(+1.0d, dnz)", Math.max(+1.0d, dnz), +1.0d); 114 test("Math.max(+1.0d, dpz)", Math.max(+1.0d, dpz), +1.0d); 115 test("Math.max(-1.0d, +1.0d)", Math.max(-1.0d, +1.0d), +1.0d); 116 test("Math.max(dnz, -1.0d)", Math.max(dnz, -1.0d), dnz); 117 test("Math.max(dpz, -1.0d)", Math.max(dpz, -1.0d), dpz); 118 test("Math.max(dnz, +1.0d)", Math.max(dnz, +1.0d), +1.0d); 119 test("Math.max(dpz, +1.0d)", Math.max(dpz, +1.0d), +1.0d); 120 test("Math.max(+1.0d, -1.0d)", Math.max(+1.0d, -1.0d), +1.0d); 121 122 } 123 124 } 125