jdk/test/hotspot/jtreg/compiler/lib/generators/AnyBitsDoubleGenerator.java
Theo Weidmann f64f22b360 8346107: Generators: testing utility for random value generation
Co-authored-by: Emanuel Peter <epeter@openjdk.org>
Reviewed-by: epeter, chagedorn
2025-01-16 12:17:21 +00:00

43 lines
1.6 KiB
Java

/*
* Copyright (c) 2024, 2025, 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.
*/
package compiler.lib.generators;
/**
* Provides an any-bits double distribution random generator, i.e. the bits are uniformly sampled,
* thus creating any possible double value, including the multiple different NaN representations.
*/
final class AnyBitsDoubleGenerator extends BoundGenerator<Double> {
/**
* Create a new {@link AnyBitsDoubleGenerator}.
*/
public AnyBitsDoubleGenerator(Generators g) {
super(g);
}
@Override
public Double next() {
return Double.longBitsToDouble(g.random.nextLong());
}
}