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
18package org.apache.commons.math.analysis;
19
20import 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 */
28public 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     */
37    double value(double x, double y)
38        throws FunctionEvaluationException;
39
40}
41