--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main/general/inst/issorted.m	Mon Nov 20 18:49:51 2006 +0000
@@ -0,0 +1,38 @@
+## Copyright (C) 2006   Sissou   <sylvain.pelissier@gmail.com>
+##
+## 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
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{y}} issorted (@var{x},@var{str})
+## issorted return 1 if @var{x} is sorted and 0 also. If @var{str} is equal to 'rows' issorted return 1 if @var{x} is 
+##equal to sortrows(@var{x}) and 0 also. 
+## @seealso{sort, sortrows}
+## @end deftypefn
+
+function y = issorted(x,str)
+	if(nargin == 0)
+		usage(" \n issorted(x) \n issorted(A,'rows')");
+	else
+		if(nargin == 1)
+			y = all(all(x == sort(x)));
+		else
+			if(nargin == 2 && str == 'rows')
+				y = all(all(x == sortrows(x)));
+			else
+				error("The second argument must be equal to 'rows'\n");
+			endif;
+		endif;
+	endif;
+endfunction;
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