--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inst/Constant.m	Fri Sep 06 10:15:34 2013 +0200
@@ -0,0 +1,39 @@
+## Copyright (C) 2013 Marco Vassallo
+
+## 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, see <http://www.gnu.org/licenses/>.
+
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} = fem_ffc (myproblem.ufl)
+## This function take as input the name of the .ufl file where 
+## the Variational Problem is defined.
+## @example
+## 
+## @end example
+## @seealso{} 
+## @end deftypefn
+
+function c = Constant (name, x)
+
+  if nargin != 2
+    error ("Constant: wrong number of input parameters.");
+  elseif ! ischar (name)
+    error ("Constant: second argument is not a valid string");
+  elseif ! isvector (x)
+    error ("Constant: second argument is not a valid string");
+  endif
+
+  c = Expression (name, @(x, y) x);
+
+endfunction