time   calls  line
                  1 function y = fliplr(x)
                  2 %FLIPLR Flip matrix in left/right direction.
                  3 %   FLIPLR(X) returns X with row preserved and columns flipped
                  4 %   in the left/right direction.
                  5 %   
                  6 %   X = 1 2 3     becomes  3 2 1
                  7 %       4 5 6              6 5 4
                  8 %
                  9 %   Class support for input X:
                 10 %      float: double, single
                 11 %
                 12 %   See also FLIPUD, ROT90, FLIPDIM.
                 13 
                 14 %   Copyright 1984-2010 The MathWorks, Inc.
                 15 %   $Revision: 5.9.4.5 $  $Date: 2010/08/23 23:07:59 $
                 16 
            16   17 if ~ismatrix(x) 
                 18   error(message('MATLAB:fliplr:SizeX')); 
                 19 end
            16   20 y = x(:,end:-1:1);