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///
/// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito <Pierre.Saramito@imag.fr>
///
/// Rheolef 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.
///
/// Rheolef 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 Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///
/// =========================================================================
//! @examplefile robin.cc The Poisson problem with Robin boundary condition
#include "rheolef.h"
using namespace rheolef;
using namespace std;
#include "cosinusprod_laplace.h"
int main(int argc, char**argv) {
environment rheolef(argc, argv);
geo omega (argv[1]);
size_t d = omega.dimension();
space Xh (omega, argv[2]);
trial u (Xh); test v (Xh);
form a = integrate (dot(grad(u),grad(v))) + integrate ("boundary", u*v);
field lh = integrate (f(d)*v) + integrate ("boundary", g(d)*v);
field uh (Xh);
problem p (a);
p.solve (lh, uh);
dout << uh;
}
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