## 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} {a} = BilinearForm (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 = BilinearForm (name, V, varargin)

  if nargin < 2
    error ("FunctionSpace: wrong number of input parameters.");
  elseif ! ischar (name)
    error ("Constant: second argument is not a valid string");
  endif

  program = sprintf ("%s_BilinearForm(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
