///
/// 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 navier_stokes_dg2.icc The Navier-Stokes equations with the discontinuous Galerkin method -- class body
Float navier_stokes_dg::space_norm (const value_type& xh) const {
  return sqrt (mu(xh[0],xh[0]) + mp(xh[1],xh[1]));
}
Float navier_stokes_dg::dual_space_norm (const value_type& mrh) const {
  value_type rh = { field(Xh,0), field (Qh,0) };
  pmu.solve (mrh[0], rh[0]);
  pmp.solve (mrh[1], rh[1]);
  return sqrt (dual(rh[0],mrh[0]) + dual(rh[1],mrh[1]));
}
