/usr/include/dune/localfunctions/lagrange/q2/q2localcoefficients.hh is in libdune-localfunctions-dev 2.2.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vi: set et ts=2 sw=2 sts=2:
#ifndef DUNE_Q2_LOCALCOEFFICIENTS_HH
#define DUNE_Q2_LOCALCOEFFICIENTS_HH
#include <cstddef>
#include <vector>
#include <dune/common/exceptions.hh>
#include <dune/localfunctions/common/localkey.hh>
namespace Dune
{
/**@ingroup LocalLayoutImplementation
\brief Layout map for Q2 elements
\tparam dim Dimension of the reference element
\nosubgrouping
\implements Dune::LocalCoefficientsVirtualImp
*/
template <int dim>
class Q2LocalCoefficients
{
public:
//! \brief Standard constructor
Q2LocalCoefficients () : li(size())
{
switch (dim) {
case 1: {
li[0] = LocalKey(0,1,0); // left vertex
li[1] = LocalKey(0,0,0); // element
li[2] = LocalKey(1,1,0); // right vertex
break;
}
case 2: {
li[0] = LocalKey(0,2,0);
li[1] = LocalKey(2,1,0);
li[2] = LocalKey(1,2,0);
li[3] = LocalKey(0,1,0);
li[4] = LocalKey(0,0,0);
li[5] = LocalKey(1,1,0);
li[6] = LocalKey(2,2,0);
li[7] = LocalKey(3,1,0);
li[8] = LocalKey(3,2,0);
break;
}
case 3: {
li[ 0] = LocalKey(0,3,0);
li[ 1] = LocalKey(6,2,0);
li[ 2] = LocalKey(1,3,0);
li[ 3] = LocalKey(4,2,0);
li[ 4] = LocalKey(4,1,0);
li[ 5] = LocalKey(5,2,0);
li[ 6] = LocalKey(2,3,0);
li[ 7] = LocalKey(7,2,0);
li[ 8] = LocalKey(3,3,0);
li[ 9] = LocalKey(0,2,0);
li[10] = LocalKey(2,1,0);
li[11] = LocalKey(1,2,0);
li[12] = LocalKey(0,1,0);
li[13] = LocalKey(0,0,0);
li[14] = LocalKey(1,1,0);
li[15] = LocalKey(2,2,0);
li[16] = LocalKey(3,1,0);
li[17] = LocalKey(3,2,0);
li[18] = LocalKey(4,3,0);
li[19] = LocalKey(10,2,0);
li[20] = LocalKey(5,3,0);
li[21] = LocalKey(8,2,0);
li[22] = LocalKey(5,1,0);
li[23] = LocalKey(9,2,0);
li[24] = LocalKey(6,3,0);
li[25] = LocalKey(11,2,0);
li[26] = LocalKey(7,3,0);
break;
}
default:
DUNE_THROW(NotImplemented, "Q2LocalCoefficients for dim==" << dim);
}
}
//! number of coefficients
std::size_t size () const
{
int size = 1;
for (int i=0; i<dim; i++)
size *= 3;
return size;
}
//! get i'th index
const LocalKey& localKey (std::size_t i) const
{
return li[i];
}
private:
std::vector<LocalKey> li;
};
}
#endif
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