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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  package org.apache.commons.math3.analysis;
18  
19  /**
20   * An interface representing a univariate vectorial function.
21   *
22   * @version $Id: UnivariateVectorFunction.java 1364387 2012-07-22 18:14:11Z tn $
23   * @since 2.0
24   */
25  public interface UnivariateVectorFunction {
26  
27      /**
28       * Compute the value for the function.
29       * @param x the point for which the function value should be computed
30       * @return the value
31       */
32      double[] value(double x);
33  
34  }