1 /*
2 * Licensed to the Hipparchus project 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 Hipparchus project 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 package org.hipparchus.analysis;
18
19 import org.hipparchus.CalculusFieldElement;
20 import org.hipparchus.Field;
21
22 /**
23 * An interface representing a scalar multivariate function for any field type.
24 * @see MultivariateFunction
25 * @since 2.2
26 */
27 public interface FieldMultivariateFunction {
28
29 /** Convert to a {@link CalculusFieldMultivariateFunction} with a specific type.
30 * @param <T> the type of the field elements
31 * @param field field for the argument and value
32 * @return converted function
33 */
34 @SuppressWarnings("unchecked")
35 default <T extends CalculusFieldElement<T>> CalculusFieldMultivariateFunction<T> toCalculusFieldMultivariateFunction(Field<T> field) {
36 return this::value;
37 }
38
39 /**
40 * Compute the value of the function.
41 *
42 * @param <T> the type of the field elements
43 * @param x Point at which the function value should be computed.
44 * @return the value of the function.
45 */
46 <T extends CalculusFieldElement<T>> T value(@SuppressWarnings("unchecked") T... x);
47
48 }