/*
* Java Genetic Algorithm Library (@__identifier__@).
* Copyright (c) @__year__@ Franz Wilhelmstötter
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Author:
* Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
*/
package org.jenetics.util;
import static java.lang.Double.doubleToLongBits;
import static java.lang.String.format;
import java.io.Serializable;
/**
* Double range class.
*
* @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
* @version 3.2
* @since 3.2
*/
public final class DoubleRange implements Serializable {
private static final long serialVersionUID = 1L;
private final double _min;
private final double _max;
private DoubleRange(final double min, final double max) {
if (min > max) {
throw new IllegalArgumentException(format(
"Min greater than max: %s > %s", min, max
));
}
_min = min;
_max = max;
}
/**
* Return the minimum value of the double range.
*
* @return the minimum value of the double range
*/
public double getMin() {
return _min;
}
/**
* Return the maximum value of the double range.
*
* @return the maximum value of the double range
*/
public double getMax() {
return _max;
}
/**
* Create a new {@code DoubleRange} object with the given {@code min} and
* {@code max} values.
*
* @param min the lower bound of the double range
* @param max the upper bound of the double range
* @return a new {@code DoubleRange} object
* @throws IllegalArgumentException if {@code min > max}
*/
public static DoubleRange of(final double min, final double max) {
return new DoubleRange(min, max);
}
@Override
public int hashCode() {
return (int)(doubleToLongBits(_min) + 31*doubleToLongBits(_max));
}
@Override
public boolean equals(final Object other) {
return other instanceof DoubleRange &&
Double.compare(_min, ((DoubleRange)other)._min) == 0 &&
Double.compare(_max, ((DoubleRange)other)._max) == 0;
}
@Override
public String toString() {
return "[" + _min + ", " + _max + "]";
}
}