tobuffer.hh

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// SPDX-FileCopyrightText: Copyright © DUNE-FUFEM Project contributors, see file AUTHORS.md
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception OR LGPL-3.0-or-later
 
#ifndef DUNE_FUFEM_HDF5_TOBUFFER_HH
#define DUNE_FUFEM_HDF5_TOBUFFER_HH
 
#include <dune/common/fvector.hh>
#include <dune/istl/bvector.hh>
#include <dune/istl/matrix.hh>
 
template <int k, typename ctype>
void toBuffer(Dune::Matrix<Dune::FieldVector<ctype, k>> const &data,
              std::vector<ctype> &buffer) {
  buffer.resize(data.N() * data.M() * k);
  auto it = buffer.begin();
  for (auto &&row : data)
    for (auto &&localVector : row)
      it = std::copy(localVector.begin(), localVector.end(), it);
}
 
template <int k, typename ctype>
void toBuffer(Dune::BlockVector<Dune::FieldVector<ctype, k>> const &data,
              std::vector<ctype> &buffer) {
  buffer.resize(data.size() * k);
  auto it = buffer.begin();
  for (auto &&localVector : data)
    it = std::copy(localVector.begin(), localVector.end(), it);
}
 
template <typename ctype>
void toBuffer(Dune::BlockVector<Dune::FieldVector<ctype, 1>> const &data,
              std::vector<ctype> &buffer) {
  buffer.resize(data.size());
  auto it = buffer.begin();
  for (auto &&localVector : data)
    *(it++) = localVector[0];
}
 
template <typename ctype>
void toBuffer(ctype const &data, std::vector<ctype> &buffer) {
  buffer.resize(1);
  buffer[0] = data;
}
#endif