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