001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.math4.legacy.analysis.differentiation;
019
020import org.apache.commons.math4.legacy.analysis.MultivariateFunction;
021
022/**
023 * Extension of {@link MultivariateFunction} representing a
024 * multivariate differentiable real function.
025 * @since 3.1
026 */
027public interface MultivariateDifferentiableFunction extends MultivariateFunction {
028    /**
029     * Compute the value for the function at the given point.
030     *
031     * @param point Point at which the function must be evaluated.
032     * @return the function value for the given point.
033     * @throws org.apache.commons.math4.legacy.exception.MathIllegalArgumentException
034     * if {@code point} does not satisfy the function's constraints (wrong dimension,
035     * argument out of bound, or unsupported derivative order for example).
036     */
037    DerivativeStructure value(DerivativeStructure[] point);
038}