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.math4.legacy.analysis.differentiation;
18
19 import org.apache.commons.math4.legacy.analysis.UnivariateFunction;
20
21 /** Interface for univariate functions derivatives.
22 * <p>This interface represents a simple function which computes
23 * both the value and the first derivative of a mathematical function.
24 * The derivative is computed with respect to the input variable.</p>
25 * @see UnivariateDifferentiableFunction
26 * @see UnivariateFunctionDifferentiator
27 * @since 3.1
28 */
29 public interface UnivariateDifferentiableFunction extends UnivariateFunction {
30
31 /** Simple mathematical function.
32 * <p>{@link UnivariateDifferentiableFunction} classes compute both the
33 * value and the first derivative of the function.</p>
34 * @param t function input value
35 * @return function result
36 * @throws org.apache.commons.math4.legacy.exception.DimensionMismatchException
37 * if {@code t} is inconsistent with the function's free parameters or order.
38 */
39 DerivativeStructure value(DerivativeStructure t);
40 }