/
RandomNextDoubleBoundary.java
52 lines (47 loc) · 1.99 KB
/
RandomNextDoubleBoundary.java
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/*
* Copyright (c) 2022, Oracle and/or its affiliates. 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
* @summary Verify nextDouble stays within range
* @bug 8280550
*/
import java.util.SplittableRandom;
public class RandomNextDoubleBoundary {
public static void main(String... args) {
// Both bounds are negative
double lowerBound = -1.0000000000000002;
double upperBound = -1.0;
var sr = new SplittableRandom(42L);
var r = sr.nextDouble(lowerBound, upperBound);
if (r >= upperBound) {
System.err.println("r = " + r + "\t" + Double.toHexString(r));
System.err.println("ub = " + upperBound + "\t" + Double.toHexString(upperBound));
throw new RuntimeException("Greater than upper bound");
}
if (r < lowerBound) {
System.err.println("r = " + r + "\t" + Double.toHexString(r));
System.err.println("lb = " + lowerBound + "\t" + Double.toHexString(lowerBound));
throw new RuntimeException("Less than lower bound");
}
}
}