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.algebra.Matrix;
19 import com.irurueta.numerical.EvaluationException;
20
21 /**
22 * Interface to define how matrix (multivariate) single dimension functions can be evaluated in
23 * Double Exponential Rule Quadrature function integrators.
24 */
25 public interface DoubleExponentialMatrixSingleDimensionFunctionEvaluatorListener {
26
27 /**
28 * Evaluates a single dimension function such as f(x) at provided point and returns the result.
29 *
30 * @param x point where function will be evaluated.
31 * @param delta value to handle singularities. If the function has no singularities, or the
32 * singularities are “mild” (e.g., no worse than logarithmic), this can be ignored.
33 * @param result matrix where function evaluation will be stored.
34 * @throws EvaluationException raised if something failed during the evaluation.
35 */
36 void evaluate(final double x, final double delta, final Matrix result) throws EvaluationException;
37
38 /**
39 * Gets number of rows of matrix result of function f.
40 *
41 * @return number of rows.
42 */
43 int getRows();
44
45 /**
46 * Gets number of columns of matrix result of function f.
47 *
48 * @return number of columns.
49 */
50 int getColumns();
51 }