001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018 package org.apache.commons.math3.analysis.function;
019
020 import org.apache.commons.math3.analysis.UnivariateFunction;
021 import org.apache.commons.math3.util.FastMath;
022
023 /**
024 * Absolute value function.
025 *
026 * @since 3.0
027 * @version $Id: Abs.java 1364377 2012-07-22 17:39:16Z tn $
028 */
029 public class Abs implements UnivariateFunction {
030 /** {@inheritDoc} */
031 public double value(double x) {
032 return FastMath.abs(x);
033 }
034 }