001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.nabla.caching; 018 019 import org.apache.commons.math3.analysis.UnivariateVectorFunction; 020 import org.apache.commons.math3.analysis.differentiation.UnivariateDifferentiableVectorFunction; 021 import org.apache.commons.math3.analysis.differentiation.UnivariateVectorFunctionDifferentiator; 022 023 /** Differentiator that fetches classes already differentiated by 024 * {@link org.apache.commons.nabla.forward.ForwardModeDifferentiator}. 025 * @see org.apache.commons.nabla.forward.ForwardModeDifferentiator 026 * @version $Id$ 027 */ 028 public class FetchDifferentiator implements UnivariateVectorFunctionDifferentiator { 029 030 /** {@inheritDoc} */ 031 public UnivariateDifferentiableVectorFunction differentiate(final UnivariateVectorFunction function) { 032 033 // TODO: implement differentiation by fetching an already derived class 034 return null; 035 036 } 037 038 }