copy_n
#
Header File: Kokkos_StdAlgorithms.hpp
namespace Kokkos{
namespace Experimental{
template <class ExecutionSpace, class InputIteratorType, class SizeType, class OutputIteratorType>
OutputIteratorType copy_n(const ExecutionSpace& exespace, (1)
InputIteratorType first_from,
SizeType n,
OutputIteratorType first_to);
template <class ExecutionSpace, class InputIteratorType, class SizeType, class OutputIteratorType>
OutputIteratorType copy_n(const std::string & label,
const ExecutionSpace& exespace, (2)
InputIteratorType first_from,
SizeType n,
OutputIteratorType first_to);
template <
class ExecutionSpace,
class DataType1, class... Properties1,
class SizeType,
class DataType2, class... Properties2
>
auto copy_n(const ExecutionSpace& exespace, (3)
const Kokkos::View<DataType1, Properties1...>& view_from,
SizeType n,
const Kokkos::View<DataType2, Properties2...>& view_to);
template <
class ExecutionSpace,
class DataType1, class... Properties1,
class SizeType,
class DataType2, class... Properties2
>
auto copy_n(const std::string& label, const ExecutionSpace& exespace, (4)
const Kokkos::View<DataType1, Properties1...>& view_from,
SizeType n,
const Kokkos::View<DataType2, Properties2...>& view_to);
} //end namespace Experimental
} //end namespace Kokkos
Copies the first n
elements starting at first_from
to
another range starting at first_to
(overloads 1,2) or the first n
elements
from view_from
to view_to
(overloads 3,4).
Parameters and Requirements#
exespace
,first_from
,first_to
,view_from
,view_to
:same as in
copy
label
:used to name the implementation kernels for debugging purposes
for 1, the default string is: “Kokkos::copy_n_if_iterator_api_default”
for 3, the default string is: “Kokkos::copy_n_if_view_api_default”
n
:number of elements to copy (must be non-negative)
Return#
If n>0
, returns an iterator to the destination element after the last element copied.
Otherwise, returns first_to
(for 1,2) or Kokkos::begin(view_to)
(for 3,4).