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 8021203
27 * @summary Test that doubleValue() doesn't overflow
28 * @author Dmitry Nadezhin
29 */
30import java.math.BigInteger;
31
32public class DoubleValueOverflow {
33
34    public static void main(String[] args) {
35        try {
36            BigInteger x = BigInteger.valueOf(2).shiftLeft(Integer.MAX_VALUE); // x = pow(2,pow(2,31))
37            if (x.doubleValue() != Double.POSITIVE_INFINITY) {
38                throw new RuntimeException("Incorrect doubleValue() " + x.doubleValue());
39            }
40            System.out.println("Passed with correct result");
41        } catch (ArithmeticException e) {
42            // expected
43            System.out.println("Overflow is reported by ArithmeticException, as expected");
44        } catch (OutOfMemoryError e) {
45            // possible
46            System.err.println("DoubleValueOverflow skipped: OutOfMemoryError");
47            System.err.println("Run jtreg with -javaoption:-Xmx8g");
48        }
49    }
50}
51