test/tools/javac/lambda/LambdaTestStrictFPMethod.java

changeset 2528
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2431:37c7dbe8efee 2528:eb284abd64fe
1 /*
2 * Copyright (c) 2014, 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 8046060
27 * @summary Different results of floating point multiplication for lambda code block
28 */
29
30 public class LambdaTestStrictFPMethod {
31
32 public static void main(String args[]) {
33 new LambdaTestStrictFPMethod().test();
34 }
35
36 strictfp void test() {
37 double result = eval(() -> {
38 double x = Double.longBitsToDouble(0x1e7ee00000000000L);
39 double y = Double.longBitsToDouble(0x2180101010101010L);
40
41 return x * y;
42 });
43 {
44 double x = Double.longBitsToDouble(0x1e7ee00000000000L);
45 double y = Double.longBitsToDouble(0x2180101010101010L);
46
47 double z = x * y;
48 check(z, result, "method");
49 }
50 }
51
52 strictfp void check(double expected, double got, String where) {
53 if (got != expected) {
54 throw new AssertionError(where + ": Non-strictfp " + got + " != " + expected);
55 }
56 }
57
58 static double eval(Face arg) {
59 return arg.m();
60 }
61
62 interface Face {
63 double m();
64 }
65 }

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