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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.math4.legacy.analysis;
19  
20  /**
21   * An interface representing a multivariate vectorial function.
22   * @since 2.0
23   */
24  public interface MultivariateVectorFunction {
25  
26      /**
27       * Compute the value for the function at the given point.
28       * @param point point at which the function must be evaluated
29       * @return function value for the given point
30       * @exception IllegalArgumentException if point's dimension is wrong
31       */
32      double[] value(double[] point)
33          throws IllegalArgumentException;
34  }