    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
    018    package org.apache.commons.math3.analysis.differentiation;
    019
    020    import org.apache.commons.math3.analysis.MultivariateFunction;
    021    import org.apache.commons.math3.exception.MathIllegalArgumentException;
    022
    023    /**
    024     * Extension of {@link MultivariateFunction} representing a
    025     * multivariate differentiable real function.
    026     * @version $Id: MultivariateDifferentiableFunction.java 1416643 2012-12-03 19:37:14Z tn $
    027     * @since 3.1
    028     */
    029    public interface MultivariateDifferentiableFunction extends MultivariateFunction {
    030
    031        /**
    032         * Compute the value for the function at the given point.
    033         *
    034         * @param point Point at which the function must be evaluated.
    035         * @return the function value for the given point.
    036         * @exception MathIllegalArgumentException if {@code point} does not
    037         * fulfill functions constraints (wrong dimension, argument out of bound,
    038         * or unsupported derivative order for example)
    039         */
    040        DerivativeStructure value(DerivativeStructure[] point)
    041            throws MathIllegalArgumentException;
    042
    043    }