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.analysis.differentiation;
019
020import org.apache.commons.math4.analysis.MultivariateFunction;
021import org.apache.commons.math4.exception.MathIllegalArgumentException;
022
023/**
024 * Extension of {@link MultivariateFunction} representing a
025 * multivariate differentiable real function.
026 * @since 3.1
027 */
028public interface MultivariateDifferentiableFunction extends MultivariateFunction {
029
030    /**
031     * Compute the value for the function at the given point.
032     *
033     * @param point Point at which the function must be evaluated.
034     * @return the function value for the given point.
035     * @exception MathIllegalArgumentException if {@code point} does not
036     * satisfy the function's constraints (wrong dimension, argument out of bound,
037     * or unsupported derivative order for example)
038     */
039    DerivativeStructure value(DerivativeStructure[] point)
040        throws MathIllegalArgumentException;
041
042}