/usr/include/dune/pdelab/constraints/p0ghost.hh is in libdune-pdelab-dev 2.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | // -*- tab-width: 4; indent-tabs-mode: nil -*-
#ifndef DUNE_PDELAB_P0GHOSTCONSTRAINTS_HH
#define DUNE_PDELAB_P0GHOSTCONSTRAINTS_HH
#include "../common/geometrywrapper.hh"
#include<dune/grid/common/gridenums.hh>
namespace Dune {
  namespace PDELab {
    //! \addtogroup Constraints
    //! \ingroup FiniteElementMap
    //! \{
    //! Parallel P0 constraints for nonoverlapping grids with ghosts
    class P0ParallelGhostConstraints
    {
    public:
      enum{doBoundary=false};
      enum{doProcessor=false};
      enum{doSkeleton=false};
      enum{doVolume=true};
      //! volume constraints
      /**
       * \tparam EG  element geometry
       * \tparam LFS local function space
       * \tparam T   TransformationType
       */
      template<typename EG, typename LFS, typename T>
      void volume (const EG& eg, const LFS& lfs, T& trafo) const
      {
        // nothing to do for interior entities
        if (eg.entity().partitionType()==Dune::InteriorEntity)
          return;
        // constrain ghost entities
        else if  (eg.entity().partitionType()==Dune::GhostEntity){
          typename T::RowType empty;
          typedef typename LFS::Traits::SizeType size_type;
          for (size_type i=0; i<lfs.size(); i++){
            trafo[lfs.dofIndex(i)] = empty;
          }
        }
      }
    };
    //! \}
  }
}
#endif
 |