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 /**
20  * Student's t-Distribution.
21  *
22  * <p>
23  * References:
24  * <ul>
25  * <li><a href="http://mathworld.wolfram.com/Studentst-Distribution.html">
26  * Student's t-Distribution</a></li>
27  * </ul>
28  * </p>
29  *
30  * @version $Revision: 920852 $ $Date: 2010-03-09 13:53:44 +0100 (mar. 09 mars 2010) $
31  */
32 public interface TDistribution extends ContinuousDistribution {
33     /**
34      * Modify the degrees of freedom.
35      * @param degreesOfFreedom the new degrees of freedom.
36      * @deprecated as of v2.1
37      */
38     @Deprecated
setDegreesOfFreedom(double degreesOfFreedom)39     void setDegreesOfFreedom(double degreesOfFreedom);
40 
41     /**
42      * Access the degrees of freedom.
43      * @return the degrees of freedom.
44      */
getDegreesOfFreedom()45     double getDegreesOfFreedom();
46 }
47