code: ///////////////////////////////////////////////////////////////////////////////
  // For information as to what this class does, see the Javadoc, below.       //
  // Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,       //
  // 2007, 2008, 2009, 2010, 2014, 2015 by Peter Spirtes, Richard Scheines, Joseph   //
  // Ramsey, and Clark Glymour.                                                //
  //                                                                           //
  // This program is free software; you can redistribute it and/or modify      //
  // it under the terms of the GNU General Public License as published by      //
  // the Free Software Foundation; either version 2 of the License, or         //
  // (at your option) any later version.                                       //
  //                                                                           //
  // This program is distributed in the hope that it will be useful,           //
  // but WITHOUT ANY WARRANTY; without even the implied warranty of            //
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
  // GNU General Public License for more details.                              //
  //                                                                           //
  // You should have received a copy of the GNU General Public License         //
  // along with this program; if not, write to the Free Software               //
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA //
  ///////////////////////////////////////////////////////////////////////////////
  
  package edu.cmu.tetrad.search;
  
  import edu.cmu.tetrad.util.StatUtils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Implements a conditional Gaussian BIC score for FGES.
   *
   * @author Joseph Ramsey
   */
  public class Test {
  
      @org.junit.Test
      public void test() {
          double[] a = {.3, .03, .01};
  
          List<Double> logs = new ArrayList<>();
  
          for (double _a : a) {
              logs.add(Math.log(_a));
          }
  
          double sum = 0.0;
  
          for (double _a : a) {
              sum += _a;
          }
  
          double logsum = StatUtils.logsum(logs);
  
          System.out.println(Math.exp(logsum) + " " + sum);
      }
  
  }
  
  
  
  