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 }