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    1   /*
    2    * Copyright 2003-2004 The Apache Software Foundation.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *      http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package org.apache.commons.math.distribution;
    17
    18  /***
    19   * F-Distribution.
    20   *
    21   * Instances of FDistribution objects should be created using
    22   * {@link DistributionFactory#createFDistribution(double,double)}.
    23   *
    24   * <p>
    25   * References:
    26   * <ul>
    27   * <li><a href="http://mathworld.wolfram.com/F-Distribution.html">
    28   * F-Distribution</a></li>
    29   * </ul>
    30   * </p>
    31   *
    32   * @version $Revision: 1.13 $ $Date: 2004/06/23 16:26:15 $
    33   */
    34  public interface FDistribution extends ContinuousDistribution {
    35      /***
    36       * Modify the numerator degrees of freedom.
    37       * @param degreesOfFreedom the new numerator degrees of freedom.
    38       */
    39      void setNumeratorDegreesOfFreedom(double degreesOfFreedom);
    40
    41      /***
    42       * Access the numerator degrees of freedom.
    43       * @return the numerator degrees of freedom.
    44       */
    45      double getNumeratorDegreesOfFreedom();
    46
    47      /***
    48       * Modify the denominator degrees of freedom.
    49       * @param degreesOfFreedom the new denominator degrees of freedom.
    50       */
    51      void setDenominatorDegreesOfFreedom(double degreesOfFreedom);
    52
    53      /***
    54       * Access the denominator degrees of freedom.
    55       * @return the denominator degrees of freedom.
    56       */
    57      double getDenominatorDegreesOfFreedom();
    58  }