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 * https://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 /*
19 * This is not the original file distributed by the Apache Software Foundation
20 * It has been modified by the Hipparchus project
21 */
22 package org.hipparchus.analysis.differentiation;
23
24 import org.hipparchus.analysis.UnivariateFunction;
25 import org.hipparchus.exception.MathIllegalArgumentException;
26
27 /** Interface for univariate functions derivatives.
28 * <p>This interface represents a simple function which computes
29 * both the value and the first derivative of a mathematical function.
30 * The derivative is computed with respect to the input variable.</p>
31 * @see UnivariateDifferentiableFunction
32 * @see UnivariateFunctionDifferentiator
33 */
34 public interface UnivariateDifferentiableFunction extends UnivariateFunction {
35
36 /**
37 * Compute the value for the function.
38 * @param x the point for which the function value should be computed
39 * @param <T> the type of the field elements
40 * @return the value
41 * @exception MathIllegalArgumentException if {@code x} does not
42 * satisfy the function's constraints (argument out of bound, or unsupported
43 * derivative order for example)
44 */
45 <T extends Derivative<T>> T value(T x) throws MathIllegalArgumentException;
46
47 }