aoqi@0: /*
aoqi@0:  * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  *
aoqi@0:  */
aoqi@0: 
aoqi@0: /*
aoqi@0:  * @test
aoqi@0:  * @bug 6778657
aoqi@0:  * @summary Casts in SharedRuntime::f2i, f2l, d2i and d2l rely on undefined C++ behaviour
aoqi@0:  */
aoqi@0: 
aoqi@0: public class Test {
aoqi@0:   public static void check_f2i(int expect) {
aoqi@0:     float check = expect;
aoqi@0:     check *= 2;
aoqi@0:     int actual = (int) check;
aoqi@0:     if (actual != expect)
aoqi@0:       throw new RuntimeException("expecting " + expect + ", got " + actual);
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void check_f2l(long expect) {
aoqi@0:     float check = expect;
aoqi@0:     check *= 2;
aoqi@0:     long actual = (long) check;
aoqi@0:     if (actual != expect)
aoqi@0:       throw new RuntimeException("expecting " + expect + ", got " + actual);
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void check_d2i(int expect) {
aoqi@0:     double check = expect;
aoqi@0:     check *= 2;
aoqi@0:     int actual = (int) check;
aoqi@0:     if (actual != expect)
aoqi@0:       throw new RuntimeException("expecting " + expect + ", got " + actual);
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void check_d2l(long expect) {
aoqi@0:     double check = expect;
aoqi@0:     check *= 2;
aoqi@0:     long actual = (long) check;
aoqi@0:     if (actual != expect)
aoqi@0:       throw new RuntimeException("expecting " + expect + ", got " + actual);
aoqi@0:   }
aoqi@0: 
aoqi@0:   public static void main(String[] args) {
aoqi@0:     check_f2i(Integer.MAX_VALUE);
aoqi@0:     check_f2i(Integer.MIN_VALUE);
aoqi@0:     check_f2l(Long.MAX_VALUE);
aoqi@0:     check_f2l(Long.MIN_VALUE);
aoqi@0:     check_d2i(Integer.MAX_VALUE);
aoqi@0:     check_d2i(Integer.MIN_VALUE);
aoqi@0:     check_d2l(Long.MAX_VALUE);
aoqi@0:     check_d2l(Long.MIN_VALUE);
aoqi@0:   }
aoqi@0: }
aoqi@0: