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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */
package org.apache.commons.math3.optim;

import java.util.Arrays;

/**
 * Simple optimization constraints: lower and upper bounds.
 * The valid range of the parameters is an interval that can be infinite
 * (in one or both directions).
 * 
* Immutable class. * * @since 3.1 */ public class SimpleBounds implements OptimizationData { /** Lower bounds. */ private final double[] lower; /** Upper bounds. */ private final double[] upper; /** * @param lB Lower bounds. * @param uB Upper bounds. */ public SimpleBounds(double[] lB, double[] uB) { lower = lB.clone(); upper = uB.clone(); } /** * Gets the lower bounds. * * @return the lower bounds. */ public double[] getLower() { return lower.clone(); } /** * Gets the upper bounds. * * @return the upper bounds. */ public double[] getUpper() { return upper.clone(); } /** * Factory method that creates instance of this class that represents * unbounded ranges. * * @param dim Number of parameters. * @return a new instance suitable for passing to an optimizer that * requires bounds specification. */ public static SimpleBounds unbounded(int dim) { final double[] lB = new double[dim]; Arrays.fill(lB, Double.NEGATIVE_INFINITY); final double[] uB = new double[dim]; Arrays.fill(uB, Double.POSITIVE_INFINITY); return new SimpleBounds(lB, uB); } }




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