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