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 }