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 package org.apache.commons.math.analysis;
018
019 import org.apache.commons.math.FunctionEvaluationException;
020
021 /**
022 * An interface representing a univariate real function.
023 *
024 * @version $Revision: 811786 $ $Date: 2009-09-06 05:36:08 -0400 (Sun, 06 Sep 2009) $
025 */
026 public interface UnivariateRealFunction {
027
028 /**
029 * Compute the value for the function.
030 * @param x the point for which the function value should be computed
031 * @return the value
032 * @throws FunctionEvaluationException if the function evaluation fails
033 */
034 double value(double x) throws FunctionEvaluationException;
035
036 }