| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.math4.legacy.analysis; |
| |
| /** |
| * An interface representing a real function that depends on one independent |
| * variable plus some extra parameters. |
| * |
| * @since 3.0 |
| */ |
| public interface ParametricUnivariateFunction { |
| /** |
| * Compute the value of the function. |
| * |
| * @param x Point for which the function value should be computed. |
| * @param parameters Function parameters. |
| * @return the value. |
| */ |
| double value(double x, double ... parameters); |
| |
| /** |
| * Compute the gradient of the function with respect to its parameters. |
| * |
| * @param x Point for which the function value should be computed. |
| * @param parameters Function parameters. |
| * @return the value. |
| */ |
| double[] gradient(double x, double ... parameters); |
| } |