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.math.analysis;
019
020 import org.apache.commons.math.FunctionEvaluationException;
021
022
023
024 /**
025 * An interface representing a bivariate real function.
026 *
027 * @since 2.1
028 * @version $Revision: 924453 $ $Date: 2010-03-17 16:05:20 -0400 (Wed, 17 Mar 2010) $
029 */
030 public interface BivariateRealFunction {
031
032 /**
033 * Compute the value for the function.
034 * @param x abscissa for which the function value should be computed
035 * @param y ordinate for which the function value should be computed
036 * @return the value
037 * @throws FunctionEvaluationException if the function evaluation fails
038 */
039 double value(double x, double y) throws FunctionEvaluationException;
040
041 }