1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.math.distribution; 18 19 import org.apache.commons.math.MathException; 20 21 /** 22 * <p>Base interface for continuous distributions.</p> 23 * 24 * <p>Note: this interface will be extended in version 3.0 to include 25 * <br/><code>public double density(double x)</code><br/> 26 * that is, from version 3.0 forward, continuous distributions <strong>must</strong> 27 * include implementations of probability density functions. As of version 28 * 2.1, all continuous distribution implementations included in commons-math 29 * provide implementations of this method.</p> 30 * 31 * @version $Revision: 924362 $ $Date: 2010-03-17 17:45:31 +0100 (mer. 17 mars 2010) $ 32 */ 33 public interface ContinuousDistribution extends Distribution { 34 35 /** 36 * For this distribution, X, this method returns x such that P(X < x) = p. 37 * @param p the cumulative probability. 38 * @return x. 39 * @throws MathException if the inverse cumulative probability can not be 40 * computed due to convergence or other numerical errors. 41 */ 42 double inverseCumulativeProbability(double p) throws MathException; 43 } 44
