/usr/include/dune/pdelab/finiteelementmap/p12dfem.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  | // -*- tab-width: 4; indent-tabs-mode: nil -*-
#ifndef DUNE_PDELAB_FINITEELEMENTMAP_P12DFEM_HH
#define DUNE_PDELAB_FINITEELEMENTMAP_P12DFEM_HH
#warning dune/pdelab/finiteelementmap/p12dfem.hh and P12DLocalFiniteElementMap are deprecated, please use dune/pdelab/finiteelementmap/pkfem.hh and PkLocalFiniteElementMap instead
#include <dune/common/deprecated.hh>
#include <dune/geometry/type.hh>
#include <dune/localfunctions/lagrange/p1.hh>
#include "finiteelementmap.hh"
namespace Dune {
  namespace PDELab {
    //! wrap up element from local functions
    //! \ingroup FiniteElementMap
    template<class D, class R>
    class DUNE_DEPRECATED_MSG("Please use PkLocalFiniteElementMap instead") P12DLocalFiniteElementMap
      : public SimpleLocalFiniteElementMap< Dune::P1LocalFiniteElement<D,R,2> >
    {
    public:
      bool fixedSize() const
      {
        return true;
      }
      std::size_t size(GeometryType gt) const
      {
        if (gt.isVertex())
          return 1;
        return 0;
      }
      std::size_t maxLocalSize() const
      {
        return 3;
      }
    };
  }
}
#endif // DUNE_PDELAB_FINITEELEMENTMAP_P12DFEM_HH
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