utility.hh

#ifndef DUNE_MULTIDOMAINGRID_UTILITY_HH
#define DUNE_MULTIDOMAINGRID_UTILITY_HH
 
#include <algorithm>
#include <tuple>
#include <dune/geometry/type.hh>
#include <dune/common/iteratorfacades.hh>
 
namespace Dune {
 
namespace mdgrid {
 
namespace util {
 
struct GeometryTypeHash {
 
  std::size_t operator()(GeometryType gt) const {
    std::size_t hash = gt.dim() * 509;
    return gt.dim() < 2 ? hash : hash + static_cast<std::size_t>(gt.id());
  }
 
};
 
template<typename T, typename binary_function>
struct collect_elementwise_struct {
 
  T& result;
  binary_function func;
 
  collect_elementwise_struct(T& r, binary_function f = binary_function()) :
    result(r),
    func(f)
  {}
 
  void operator()(T& val) {
    std::transform(val.begin(),val.end(),result.begin(),result.begin(),func);
  }
};
 
template<typename binary_function, typename T>
collect_elementwise_struct<T,binary_function> collect_elementwise(T& result, binary_function f = binary_function()) {
  return collect_elementwise_struct<T,binary_function>(result,f);
}
 
} // namespace util
 
} // namespace mdgrid
 
} // namespace Dune
 
 
#endif // DUNE_MULTIDOMAINGRID_UTILITY_HH