quadrature_jacobi.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner

// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.

// This library 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
// Lesser General Public License for more details.

// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA



#ifndef LIBMESH_QUADRATURE_JACOBI_H
#define LIBMESH_QUADRATURE_JACOBI_H

// Local includes
#include "libmesh/quadrature.h"

// C++ includes

namespace libMesh
{


// ------------------------------------------------------------
// QJacobi class definition


class QJacobi : public QBase
{
public:

  QJacobi (const unsigned int _dim,
           const Order _order=INVALID_ORDER,
           const unsigned int a=1,
           const unsigned int b=0);

  ~QJacobi() {}

  QuadratureType type() const;


private:
  const unsigned int _alpha;
  const unsigned int _beta;

  void init_1D (const ElemType _type=INVALID_ELEM,
                unsigned int p_level=0);

};




// ------------------------------------------------------------
// QJacobi class members
inline
QJacobi::QJacobi(const unsigned int d,
                 const Order o,
                 const unsigned int a,
                 const unsigned int b) : QBase(d,o), _alpha(a), _beta(b)
{
  if (_dim == 1)
    init(EDGE2);
}



inline
QuadratureType QJacobi::type() const
{
  if ((_alpha == 1) && (_beta == 0))
    return QJACOBI_1_0;

  else if ((_alpha == 2) && (_beta == 0))
    return QJACOBI_2_0;

  else
    libmesh_error_msg("Invalid Jacobi quadrature rule: alpha = " << _alpha << ", beta = " << _beta);
}


} // namespace libMesh


#endif // LIBMESH_QUADRATURE_JACOBI_H