--- a/scripts/statistics/models/logistic_regression_likelihood.m
+++ b/scripts/statistics/models/logistic_regression_likelihood.m
@@ -1,34 +1,34 @@
 ## Copyright (C) 1995, 1996, 1997  Kurt Hornik
-## 
+##
 ## 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, 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. 
-## 
+## General Public License for more details.
+##
 ## You should have received a copy of the GNU General Public License
 ## along with this file.  If not, write to the Free Software Foundation,
 ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
 ## Calculates likelihood for the ordinal logistic regression model.
 ## Called by logistic_regression.
-  
+
 ## Author:  Gordon K. Smyth <gks@maths.uq.oz.au>
 ## Adapted-By:  KH <Kurt.Hornik@ci.tuwien.ac.at>
 ## Description:  Likelihood in logistic regression
 
 function [g, g1, p, dev] ...
       = logistic_regression_likelihood (y, x, beta, z, z1)
-  
+
   e = exp ([z, x] * beta); e1 = exp ([z1, x] * beta);
   g = e ./ (1 + e); g1 = e1 ./ (1 + e1);
   g = max (y == max (y), g); g1 = min (y > min(y), g1);
-  
+
   p = g - g1;
-  dev = -2 * sum (log (p));  
+  dev = -2 * sum (log (p));
 
 endfunction