time   calls  line
                  1 function c = cellstr(s)
                  2 %CELLSTR Create cell array of strings from character array.
                  3 %   C = CELLSTR(S) places each row of the character array S into 
                  4 %   separate cells of C.
                  5 %
                  6 %   Use CHAR to convert back.
                  7 %
                  8 %   Another way to create a cell array of strings is by using the curly
                  9 %   braces: 
                 10 %      C = {'hello' 'yes' 'no' 'goodbye'};
                 11 %
                 12 %   See also STRINGS, CHAR, ISCELLSTR.
                 13 
                 14 %   Copyright 1984-2006 The MathWorks, Inc.
                 15 %   $Revision: 1.16.4.9 $  $Date: 2010/08/23 23:13:16 $
                 16 %==============================================================================
                 17 
            89   18 if ischar(s) 
            89   19 	if isempty(s) 
                 20 	    c = {''};
            89   21 	else 
            89   22         if ndims(s)~=2 
                 23 			error(message('MATLAB:cellstr:InputShape'))
                 24         end
            89   25 		[rows,cols]=size(s);%#ok ignore rows 
            89   26 		c = cell(rows,1);	 
            89   27 		for i=1:rows 
            89   28             c{i} = deblank(s(i,:)); 
            89   29 		end 
            89   30 	end 
                 31 elseif iscellstr(s)
                 32     c = s; 
                 33 else
                 34 	error(message('MATLAB:cellstr:InputClass'))
                 35 end

Other subfunctions in this file are not included in this listing.