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comparison test/compiler/intrinsics/mathexact/SubExactIRepeatTest.java @ 12972:59e8ad757e19

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8026844: Various Math functions needs intrinsification Reviewed-by: kvn, twisti
author rbackman
date Fri, 18 Oct 2013 10:41:56 +0200
parents
children 9949533a8623
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12971:3a04e444da6d 12972:59e8ad757e19
1 /*
2 * Copyright (c) 2013, 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 8026844
27 * @summary Test repeating subtractExact
28 * @compile SubExactIRepeatTest.java Verify.java
29 * @run main SubExactIRepeatTest
30 *
31 */
32
33 import java.lang.ArithmeticException;
34
35 public class SubExactIRepeatTest {
36 public static void main(String[] args) {
37 runTest(new Verify.SubExactI());
38 }
39
40 public static int nonExact(int x, int y, Verify.BinaryMethod method) {
41 int result = method.unchecked(x, y);
42 result += method.unchecked(x, y);
43 result += method.unchecked(x, y);
44 result += method.unchecked(x, y);
45 return result;
46 }
47
48 public static void runTest(Verify.BinaryMethod method) {
49 java.util.Random rnd = new java.util.Random();
50 for (int i = 0; i < 50000; ++i) {
51 int x = Integer.MIN_VALUE + 10;
52 int y = Integer.MAX_VALUE - 10 + rnd.nextInt(5);
53
54 int c = rnd.nextInt() / 2;
55 int d = rnd.nextInt() / 2;
56
57 int a = catchingExact(x, y, method);
58
59 if (a != 36) {
60 throw new RuntimeException("a != 36 : " + a);
61 }
62
63 int b = nonExact(c, d, method);
64 int n = exact(c, d, method);
65
66
67 if (n != b) {
68 throw new RuntimeException("n != b : " + n + " != " + b);
69 }
70 }
71 }
72
73 public static int exact(int x, int y, Verify.BinaryMethod method) {
74 int result = 0;
75 result += method.checkMethod(x, y);
76 result += method.checkMethod(x, y);
77 result += method.checkMethod(x, y);
78 result += method.checkMethod(x, y);
79 return result;
80 }
81
82 public static int catchingExact(int x, int y, Verify.BinaryMethod method) {
83 int result = 0;
84 try {
85 result += 5;
86 result = method.checkMethod(x, y);
87 } catch (ArithmeticException e) {
88 result += 1;
89 }
90 try {
91 result += 6;
92
93 result += method.checkMethod(x, y);
94 } catch (ArithmeticException e) {
95 result += 2;
96 }
97 try {
98 result += 7;
99 result += method.checkMethod(x, y);
100 } catch (ArithmeticException e) {
101 result += 3;
102 }
103 try {
104 result += 8;
105 result += method.checkMethod(x, y);
106 } catch (ArithmeticException e) {
107 result += 4;
108 }
109 return result;
110 }
111 }