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 30 31public class MinMax { 32 33 34 static void go(String what, float result, float correctResult) { 35 String v = what + ": got " + result + ", expected " + correctResult; 36 if (!(Float.toString(result).equals(Float.toString(correctResult)))) 37 throw new RuntimeException(v); 38 System.err.println(v); 39 } 40 41 static void go(String what, double result, double correctResult) { 42 String v = what + ": got " + result + ", expected " + correctResult; 43 if (!(Double.toString(result).equals(Double.toString(correctResult)))) 44 throw new RuntimeException(v); 45 System.err.println(v); 46 } 47 48 49 public static void main(String[] args) { 50 51 float fnz = -0.0f; 52 float fpz = +0.0f; 53 54 go("Math.min(fnz, fnz)", Math.min(fnz, fnz), fnz); 55 go("Math.min(fnz, fpz)", Math.min(fnz, fpz), fnz); 56 go("Math.min(fpz, fnz)", Math.min(fpz, fnz), fnz); 57 go("Math.min(fpz, fpz)", Math.min(fpz, fpz), fpz); 58 59 go("Math.min(-1.0f, fnz)", Math.min(-1.0f, fnz), -1.0f); 60 go("Math.min(-1.0f, fpz)", Math.min(-1.0f, fpz), -1.0f); 61 go("Math.min(+1.0f, fnz)", Math.min(+1.0f, fnz), fnz); 62 go("Math.min(+1.0f, fpz)", Math.min(+1.0f, fpz), fpz); 63 go("Math.min(-1.0f, +1.0f)", Math.min(-1.0f, +1.0f), -1.0f); 64 go("Math.min(fnz, -1.0f)", Math.min(fnz, -1.0f), -1.0f); 65 go("Math.min(fpz, -1.0f)", Math.min(fpz, -1.0f), -1.0f); 66 go("Math.min(fnz, +1.0f)", Math.min(fnz, +1.0f), fnz); 67 go("Math.min(fpz, +1.0f)", Math.min(fpz, +1.0f), fpz); 68 go("Math.min(+1.0f, -1.0f)", Math.min(+1.0f, -1.0f), -1.0f); 69 70 go("Math.max(fnz, fnz)", Math.max(fnz, fnz), fnz); 71 go("Math.max(fnz, fpz)", Math.max(fnz, fpz), fpz); 72 go("Math.max(fpz, fnz)", Math.max(fpz, fnz), fpz); 73 go("Math.max(fpz, fpz)", Math.max(fpz, fpz), fpz); 74 75 go("Math.max(-1.0f, fnz)", Math.max(-1.0f, fnz), fnz); 76 go("Math.max(-1.0f, fpz)", Math.max(-1.0f, fpz), fpz); 77 go("Math.max(+1.0f, fnz)", Math.max(+1.0f, fnz), +1.0f); 78 go("Math.max(+1.0f, fpz)", Math.max(+1.0f, fpz), +1.0f); 79 go("Math.max(-1.0f, +1.0f)", Math.max(-1.0f, +1.0f), +1.0f); 80 go("Math.max(fnz, -1.0f)", Math.max(fnz, -1.0f), fnz); 81 go("Math.max(fpz, -1.0f)", Math.max(fpz, -1.0f), fpz); 82 go("Math.max(fnz, +1.0f)", Math.max(fnz, +1.0f), +1.0f); 83 go("Math.max(fpz, +1.0f)", Math.max(fpz, +1.0f), +1.0f); 84 go("Math.max(+1.0f, -1.0f)", Math.max(+1.0f, -1.0f), +1.0f); 85 86 87 double dnz = -0.0d; 88 double dpz = +0.0d; 89 90 go("Math.min(dnz, dnz)", Math.min(dnz, dnz), dnz); 91 go("Math.min(dnz, dpz)", Math.min(dnz, dpz), dnz); 92 go("Math.min(dpz, dnz)", Math.min(dpz, dnz), dnz); 93 go("Math.min(dpz, dpz)", Math.min(dpz, dpz), dpz); 94 95 go("Math.min(-1.0d, dnz)", Math.min(-1.0d, dnz), -1.0d); 96 go("Math.min(-1.0d, dpz)", Math.min(-1.0d, dpz), -1.0d); 97 go("Math.min(+1.0d, dnz)", Math.min(+1.0d, dnz), dnz); 98 go("Math.min(+1.0d, dpz)", Math.min(+1.0d, dpz), dpz); 99 go("Math.min(-1.0d, +1.0d)", Math.min(-1.0d, +1.0d), -1.0d); 100 go("Math.min(dnz, -1.0d)", Math.min(dnz, -1.0d), -1.0d); 101 go("Math.min(dpz, -1.0d)", Math.min(dpz, -1.0d), -1.0d); 102 go("Math.min(dnz, +1.0d)", Math.min(dnz, +1.0d), dnz); 103 go("Math.min(dpz, +1.0d)", Math.min(dpz, +1.0d), dpz); 104 go("Math.min(+1.0d, -1.0d)", Math.min(+1.0d, -1.0d), -1.0d); 105 106 go("Math.max(dnz, dnz)", Math.max(dnz, dnz), dnz); 107 go("Math.max(dnz, dpz)", Math.max(dnz, dpz), dpz); 108 go("Math.max(dpz, dnz)", Math.max(dpz, dnz), dpz); 109 go("Math.max(dpz, dpz)", Math.max(dpz, dpz), dpz); 110 111 go("Math.max(-1.0d, dnz)", Math.max(-1.0d, dnz), dnz); 112 go("Math.max(-1.0d, dpz)", Math.max(-1.0d, dpz), dpz); 113 go("Math.max(+1.0d, dnz)", Math.max(+1.0d, dnz), +1.0d); 114 go("Math.max(+1.0d, dpz)", Math.max(+1.0d, dpz), +1.0d); 115 go("Math.max(-1.0d, +1.0d)", Math.max(-1.0d, +1.0d), +1.0d); 116 go("Math.max(dnz, -1.0d)", Math.max(dnz, -1.0d), dnz); 117 go("Math.max(dpz, -1.0d)", Math.max(dpz, -1.0d), dpz); 118 go("Math.max(dnz, +1.0d)", Math.max(dnz, +1.0d), +1.0d); 119 go("Math.max(dpz, +1.0d)", Math.max(dpz, +1.0d), +1.0d); 120 go("Math.max(+1.0d, -1.0d)", Math.max(+1.0d, -1.0d), +1.0d); 121 122 } 123 124} 125