--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/inst/Functional.m	Mon Sep 09 23:21:53 2013 +0200
@@ -0,0 +1,42 @@
+## 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} {V} = ResidualForm (name, V, [coefficients])
+## This function takes as input the name of the problem that you want to solve 
+## and the FunctionSpace where it is defined and return a Form defined with
+## the coefficients passed as optional argument.
+## @seealso{FunctionSpace, BilinearForm, ResidualForm}
+## @end deftypefn
+
+function a = Functional (name, V, varargin)
+
+  if nargin < 2
+    error ("Functional: wrong number of input parameters.");
+  elseif ! ischar (name)
+    error ("Functional: second argument is not a valid string");
+  endif
+
+  program = sprintf ("%s_Functional(V", name);
+   for k = 1:length (varargin)
+      eval(['f_' num2str(k) '=varargin{k};']);
+      program = strjoin ({ program, strcat('f_',num2str(k))}, ',');
+   end
+
+  program = strjoin ({program, ');'});
+  a = eval (program);
+
+endfunction