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 * An interface representing a bivariate real function.
024 *
025 * @since 2.1
026 * @version $Revision: 1073498 $ $Date: 2011-02-22 21:57:26 +0100 (mar. 22 f??vr. 2011) $
027 */
028 public interface BivariateRealFunction {
029 /**
030 * Compute the value for the function.
031 *
032 * @param x Abscissa for which the function value should be computed.
033 * @param y Ordinate for which the function value should be computed.
034 * @return the value.
035 * @throws FunctionEvaluationException if the function evaluation fails.
036 */
037 double value(double x, double y)
038 throws FunctionEvaluationException;
039
040 }