--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main/polynomial/inst/polyint.m	Mon Oct 09 18:03:07 2006 +0000
@@ -0,0 +1,37 @@
+## 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} {} polyint (@var{c},@var{k})
+## Return the coefficients of the integral of the polynomial whose
+## coefficients are represented by the vector @var{c}.
+##
+## The constant of integration is set to @var{k}. If @var{k} isn't 
+## define the integration constant is set to 0.
+## @seealso{polyinteg, polyderiv, polyreduce, roots, conv, deconv, residue,
+## filter, polyval, and polyvalm}
+## @end deftypefn
+
+function y = polyint(x,k)
+	if(nargin != 1 && nargin != 2)
+    usage ("polyint(vector,k)");
+  	endif	
+	if(nargin == 1)
+   	k=0;
+  	endif	
+	y = polyinteg(x);
+	y(prod(size(y))) = k;
+endfunction;
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