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Showing content from https://kokkos.github.io/kokkos-core-wiki/API/algorithms/std-algorithms/all/StdCopy.html below:

copy - Kokkos documentation

Header: <Kokkos_StdAlgorithms.hpp>

Copies the elements from a source range or rank-1 View to a destination range or rank-1 View.

Warning

This is currently inside the Kokkos::Experimental namespace.

template <class ExecutionSpace, class InputIteratorType, class OutputIteratorType>
OutputIteratorType copy(const ExecutionSpace& exespace,                      (1)
                        InputIteratorType first_from,
                        InputIteratorType last_from,
                        OutputIteratorType first_to);

template <class ExecutionSpace, class InputIteratorType, class OutputIteratorType>
OutputIteratorType copy(const std::string& label,                            (2)
                        const ExecutionSpace& exespace,
                        InputIteratorType first_from,
                        InputIteratorType last_from,
                        OutputIteratorType first_to);
template <
  class ExecutionSpace,
  class DataType1, class... Properties1,
  class DataType2, class... Properties2
>
auto copy(const ExecutionSpace& exespace,                                    (3)
          const Kokkos::View<DataType1, Properties1...>& view_from,
          const Kokkos::View<DataType2, Properties2...>& view_to);
template <
  class ExecutionSpace,
  class DataType1, class... Properties1,
  class DataType2, class... Properties2
>
auto copy(const std::string& label, const ExecutionSpace& exespace,          (4)
          const Kokkos::View<DataType1, Properties1...>& view_from,
          const Kokkos::View<DataType2, Properties2...>& view_to);

Added in version 4.2.

template <class TeamHandleType, class InputIteratorType, class OutputIteratorType>
KOKKOS_FUNCTION
OutputIteratorType copy(const TeamHandleType& teamHandle,                    (5)
                        InputIteratorType first_from,
                        InputIteratorType last_from,
                        OutputIteratorType first_to);

template <
  class TeamHandleType, class DataType1, class... Properties1,
  class DataType2, class... Properties2>
KOKKOS_FUNCTION
auto copy(const TeamHandleType& teamHandle,                                  (6)
          const ::Kokkos::View<DataType1, Properties1...>& view_from,
          ::Kokkos::View<DataType2, Properties2...>& view_to);

• exespace: execution space instance

• teamHandle: team handle instance given inside a parallel region when using a TeamPolicy

• label: used to name the implementation kernels for debugging purposes

  • for 1, the default string is: “Kokkos::copy_iterator_api_default”

  • for 3, the default string is: “Kokkos::copy_view_api_default”

  • NOTE: overloads accepting a team handle do not use a label internally

• first_from, last_from: range of elements to copy from

  • must be random access iterators

  • must represent a valid range, i.e., last_from >= first_from

  • must be accessible from exespace or from the execution space associated with the team handle

• first_to: beginning of the range to copy to

  • must be a random access iterator and must be accessible from exespace or from the execution space associated with the team handle

• view_from, view_to: source and destination views to copy elements from and to

  • must be rank-1, and have LayoutLeft, LayoutRight, or LayoutStride

  • must be accessible from exespace or from the execution space associated with the team handle

Iterator to the destination element after the last element copied.

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