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.nabla.caching;
18
19 import org.apache.commons.math3.analysis.UnivariateVectorFunction;
20 import org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableVectorFunction;
21 import org.apache.commons.math3.analysis.differentiation.UnivariateVectorFunctionDifferentiator;
22
23 /** Differentiator that fetches classes already differentiated by
24 * {@link org.apache.commons.nabla.forward.ForwardModeDifferentiator}.
25 * @see org.apache.commons.nabla.forward.ForwardModeDifferentiator
26 * @version $Id$
27 */
28 public class FetchDifferentiator implements UnivariateVectorFunctionDifferentiator {
29
30 /** {@inheritDoc} */
31 public UnivariateDifferentiableVectorFunction differentiate(final UnivariateVectorFunction function) {
32
33 // TODO: implement differentiation by fetching an already derived class
34 return null;
35
36 }
37
38 }