MoFEM::GetFTensor2SymmetricFromMatImpl< Tensor_Dim, S, DataLayoutTraits< DataLayout::GaussByCoeffs >, M > Struct Template Reference

#include "include/Templates.hpp"

Static Public Member Functions
static auto	get (M &data, int rr=0, int cc=0)

Detailed Description

template<int Tensor_Dim, int S, class M>
struct MoFEM::GetFTensor2SymmetricFromMatImpl< Tensor_Dim, S, DataLayoutTraits< DataLayout::GaussByCoeffs >, M >

Definition at line 746 of file Templates.hpp.

Member Function Documentation

get()

template<int Tensor_Dim, int S, class M >

static auto MoFEM::GetFTensor2SymmetricFromMatImpl< Tensor_Dim, S, DataLayoutTraits< DataLayout::GaussByCoeffs >, M >::get ( M &  data, int  rr = 0, int  cc = 0  )

inlinestatic

Definition at line 748 of file Templates.hpp.

                                                          {
    // Preserve const matrix elements in the non-owning tensor view.
    using T = std::remove_reference_t<decltype(data(0, 0))>;
    constexpr int symm_size = (Tensor_Dim * (Tensor_Dim + 1)) / 2;
    constexpr int stride = S == -1 ? symm_size : S;
    static_assert(stride % symm_size == 0,
                  "getFTensor2SymmetricFromMat: stride should be a multiple of "
                  "symm_size");
 
#ifndef NDEBUG
    if (data.size2() != symm_size)
      THROW_MESSAGE(
          "getFTensor2SymmetricFromMat<" +
          boost::lexical_cast<std::string>(Tensor_Dim) +
          ">: wrong size of data matrix, number of columns should be " +
          boost::lexical_cast<std::string>(symm_size) + " but is " +
          boost::lexical_cast<std::string>(data.size2()));
    auto *first = &data(rr + 0, cc + 0);
    auto *last = &data(rr + 0, cc + 0 + symm_size - 1);
    if (last - first != symm_size - 1)
      THROW_MESSAGE("getFTensor2SymmetricFromMat<" +
                    boost::lexical_cast<std::string>(Tensor_Dim) +
                    ">: row slice is not contiguous");
#endif
    return FTensor::Tensor2_symmetric<FTensor::CursorPtr<T *, stride>,
                                      Tensor_Dim>(&data(rr + 0, cc + 0));
  }

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The documentation for this struct was generated from the following file:

• include/Templates.hpp