/usr/include/trilinos/Kokkos_Sparse_getDiagCopy.hpp is in libtrilinos-tpetra-dev 12.10.1-3.
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/// \file Kokkos_Sparse_getDiagCopy.hpp
/// \brief Get a copy of the diagonal entries of a KokkosSparse::CrsMatrix.
#ifndef KOKKOS_SPARSE_GETDIAGCOPY_HPP_
#define KOKKOS_SPARSE_GETDIAGCOPY_HPP_
#include "Kokkos_Sparse_impl_getDiagCopyWithOffsets.hpp"
#include <type_traits>
namespace KokkosSparse {
template<class DiagType,
class OffsetsType,
class CrsMatrixType>
void
getDiagCopy (const DiagType& D,
const OffsetsType& offsets,
const CrsMatrixType& A)
{
static_assert (Kokkos::Impl::is_view<DiagType>::value,
"The DiagType template parameter must be a Kokkos::View.");
static_assert (static_cast<int> (DiagType::rank) == 1,
"The DiagType template parameter must be a 1-D Kokkos::View.");
static_assert (std::is_same<DiagType, typename DiagType::non_const_type>::value,
"The DiagType template parameter must be a nonconst Kokkos::View.");
static_assert (Kokkos::Impl::is_view<OffsetsType>::value,
"The OffsetsType template parameter must be a Kokkos::View.");
static_assert (static_cast<int> (OffsetsType::rank) == 1,
"The OffsetsType template parameter must be a 1-D Kokkos::View.");
typedef typename CrsMatrixType::value_type scalar_type;
typedef typename CrsMatrixType::ordinal_type ordinal_type;
typedef typename CrsMatrixType::device_type device_type;
typedef typename CrsMatrixType::size_type offset_type;
// Standardize on unmanaged Views, in order to avoid proliferation
// of instantiations of the implementation type.
Kokkos::View<typename DiagType::non_const_value_type*,
typename DiagType::array_layout,
typename DiagType::device_type,
Kokkos::MemoryUnmanaged> D_internal = D;
Kokkos::View<typename OffsetsType::const_value_type*,
typename OffsetsType::array_layout,
typename OffsetsType::device_type,
Kokkos::MemoryUnmanaged> offsets_internal = offsets;
typedef Impl::CrsMatrixGetDiagCopyWithOffsets<scalar_type,
ordinal_type, device_type, offset_type> impl_type;
impl_type::getDiagCopy (D_internal, offsets_internal, A);
}
} // namespace KokkosSparse
#endif // KOKKOS_SPARSE_GETDIAGCOPY_HPP_
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