dune-localfunctions  2.2.1
meta/power/coefficients.hh
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1 // -*- tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=8 sw=2 sts=2:
3 
4 #ifndef DUNE_LOCALFUNCTIONS_META_POWER_COEFFICIENTS_HH
5 #define DUNE_LOCALFUNCTIONS_META_POWER_COEFFICIENTS_HH
6 
7 #include <cstddef>
8 #include <vector>
9 
11 
12 namespace Dune {
13 
16 
21  std::vector<LocalKey> keys;
22 
23  public:
25 
33  template<class Backend>
34  PowerCoefficients(const Backend &backend, std::size_t power) :
35  keys(backend.size()*power)
36  {
37  for(std::size_t i = 0; i < backend.size(); ++i) {
38  const LocalKey &k = backend.localKey(i);
39  for(std::size_t d = 0; d < power; ++d)
40  keys[i+d*backend.size()] =
41  LocalKey(k.subEntity(), k.codim(), power*k.index() + d);
42  }
43  }
45  inline std::size_t size() const { return keys.size(); }
46 
48  inline const LocalKey& localKey(std::size_t i) const { return keys[i]; }
49  };
50 
51 } // namespace Dune
52 
53 #endif // DUNE_LOCALFUNCTIONS_META_POWER_COEFFICIENTS_HH