56 lines
1.9 KiB
Java
56 lines
1.9 KiB
Java
/*
|
|
* Copyright (c) 2023, Red Hat, Inc. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
/**
|
|
* @test
|
|
* @bug 8295159
|
|
* @summary DSO created with -ffast-math breaks Java floating-point arithmetic
|
|
* @run main/othervm/native -Xlog:os=info compiler.floatingpoint.TestSubnormalDouble
|
|
*/
|
|
|
|
package compiler.floatingpoint;
|
|
|
|
import static java.lang.System.loadLibrary;
|
|
|
|
public class TestSubnormalDouble {
|
|
static volatile double lastDouble;
|
|
|
|
private static void testDoubles() {
|
|
lastDouble = 0x1.0p-1074;
|
|
for (double x = lastDouble * 2; x <= 0x1.0p1022; x *= 2) {
|
|
if (x != x || x <= lastDouble) {
|
|
throw new RuntimeException("TEST FAILED: " + x);
|
|
}
|
|
lastDouble = x;
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) {
|
|
testDoubles();
|
|
System.out.println("Loading libfast-math.so");
|
|
loadLibrary("fast-math");
|
|
testDoubles();
|
|
System.out.println("Test passed.");
|
|
}
|
|
}
|