1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.math.analysis; 19 20 import org.apache.commons.math.FunctionEvaluationException; 21 22 /** 23 * An interface representing a bivariate real function. 24 * 25 * @since 2.1 26 * @version $Revision: 1073498 $ $Date: 2011-02-22 21:57:26 +0100 (mar. 22 févr. 2011) $ 27 */ 28 public interface BivariateRealFunction { 29 /** 30 * Compute the value for the function. 31 * 32 * @param x Abscissa for which the function value should be computed. 33 * @param y Ordinate for which the function value should be computed. 34 * @return the value. 35 * @throws FunctionEvaluationException if the function evaluation fails. 36 */ value(double x, double y)37 double value(double x, double y) 38 throws FunctionEvaluationException; 39 40 } 41