    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    package org.apache.commons.math3.analysis.differentiation;
    018
    019    import org.apache.commons.math3.analysis.UnivariateFunction;
    020    import org.apache.commons.math3.exception.MathIllegalArgumentException;
    021
    022    /** Interface for univariate functions derivatives.
    023     * <p>This interface represents a simple function which computes
    024     * both the value and the first derivative of a mathematical function.
    025     * The derivative is computed with respect to the input variable.</p>
    026     * @see UnivariateDifferentiableFunction
    027     * @see UnivariateFunctionDifferentiator
    028     * @since 3.1
    029     * @version $Id: UnivariateDifferentiableFunction.java 1416643 2012-12-03 19:37:14Z tn $
    030     */
    031    public interface UnivariateDifferentiableFunction extends UnivariateFunction {
    032
    033        /** Simple mathematical function.
    034         * <p>{@link UnivariateDifferentiableFunction} classes compute both the
    035         * value and the first derivative of the function.</p>
    036         * @param t function input value
    037         * @return function result
    038         * @exception MathIllegalArgumentException if {@code t} does not
    039         * fulfill functions constraints (argument out of bound, or unsupported
    040         * derivative order for example)
    041         */
    042        DerivativeStructure value(DerivativeStructure t) throws MathIllegalArgumentException;
    043
    044    }