1 /*
2 * Copyright (C) 2023 Alberto Irurueta Carro (alberto@irurueta.com)
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package com.irurueta.numerical.integration;
17
18 import com.irurueta.numerical.EvaluationException;
19
20 /**
21 * Interface to define how single dimension functions can be evaluated in Double Exponential Rule
22 * Quadrature function integrators.
23 */
24 public interface DoubleExponentialSingleDimensionFunctionEvaluatorListener {
25
26 /**
27 * Evaluates a single dimension function such as f(x) at provided point and returns the result.
28 *
29 * @param x point where function will be evaluated.
30 * @param delta value to handle singularities. If the function has no singularities, or the
31 * singularities are “mild” (e.g., no worse than logarithmic), this can be ignored.
32 * @return value returned by the function.
33 * @throws EvaluationException raised if something failed during the evaluation.
34 */
35 double evaluate(final double x, final double delta) throws EvaluationException;
36 }