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
30strictfp
31public class LambdaTestStrictFP {
32
33    static double fld =  eval(() -> {
34            double x = Double.longBitsToDouble(0x1e7ee00000000000L);
35            double y = Double.longBitsToDouble(0x2180101010101010L);
36
37            return x * y;
38        });
39
40    public static void main(String args[]) {
41        double result = eval(() -> {
42            double x = Double.longBitsToDouble(0x1e7ee00000000000L);
43            double y = Double.longBitsToDouble(0x2180101010101010L);
44
45            return x * y;
46        });
47        {
48            double x = Double.longBitsToDouble(0x1e7ee00000000000L);
49            double y = Double.longBitsToDouble(0x2180101010101010L);
50
51            double z = x * y;
52            check(z, result, "method");
53            check(z, fld, "field");
54        }
55    }
56
57    private static void check(double expected, double got, String where) {
58        if (got != expected) {
59            throw new AssertionError(where + ": Non-strictfp " + got + " != " + expected);
60        }
61    }
62
63    private static double eval(Face arg) {
64        return arg.m();
65    }
66
67    private interface Face {
68        double m();
69    }
70}
71