/home/runner/work/cccl/cccl/cub/cub/device/device_adjacent_difference.cuh
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#pragma once
#include <cub/config.cuh>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <cub/detail/choose_offset.cuh>
#include <cub/detail/nvtx.cuh>
#include <cub/detail/type_traits.cuh>
#include <cub/device/dispatch/dispatch_adjacent_difference.cuh>
#include <cub/util_deprecated.cuh>
#include <cub/util_namespace.cuh>
#include <thrust/detail/cstdint.h>
#include <thrust/detail/integer_traits.h>
CUB_NAMESPACE_BEGIN
struct DeviceAdjacentDifference
{
private:
template <bool may_alias,
bool read_left,
typename NumItemsT,
typename InputIteratorT,
typename OutputIteratorT,
typename DifferenceOpT>
static CUB_RUNTIME_FUNCTION cudaError_t AdjacentDifference(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_input,
OutputIteratorT d_output,
NumItemsT num_items,
DifferenceOpT difference_op,
cudaStream_t stream)
{
using OffsetT = detail::choose_offset_t<NumItemsT>;
using DispatchT =
DispatchAdjacentDifference<InputIteratorT, OutputIteratorT, DifferenceOpT, OffsetT, may_alias, read_left>;
return DispatchT::Dispatch(
d_temp_storage, temp_storage_bytes, d_input, d_output, static_cast<OffsetT>(num_items), difference_op, stream);
}
public:
template <typename InputIteratorT,
typename OutputIteratorT,
typename DifferenceOpT = cub::Difference,
typename NumItemsT = std::uint32_t>
static CUB_RUNTIME_FUNCTION cudaError_t SubtractLeftCopy(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_input,
OutputIteratorT d_output,
NumItemsT num_items,
DifferenceOpT difference_op = {},
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DeviceAdjacentDifference::SubtractLeftCopy");
constexpr bool may_alias = false;
constexpr bool read_left = true;
return AdjacentDifference<may_alias, read_left>(
d_temp_storage, temp_storage_bytes, d_input, d_output, num_items, difference_op, stream);
}
template <typename InputIteratorT, typename OutputIteratorT, typename DifferenceOpT, typename NumItemsT = std::uint32_t>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED static CUB_RUNTIME_FUNCTION cudaError_t SubtractLeftCopy(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_input,
OutputIteratorT d_output,
NumItemsT num_items,
DifferenceOpT difference_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return SubtractLeftCopy(d_temp_storage, temp_storage_bytes, d_input, d_output, num_items, difference_op, stream);
}
template <typename RandomAccessIteratorT, typename DifferenceOpT = cub::Difference, typename NumItemsT = std::uint32_t>
static CUB_RUNTIME_FUNCTION cudaError_t SubtractLeft(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
RandomAccessIteratorT d_input,
NumItemsT num_items,
DifferenceOpT difference_op = {},
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DeviceAdjacentDifference::SubtractLeft");
constexpr bool may_alias = true;
constexpr bool read_left = true;
return AdjacentDifference<may_alias, read_left>(
d_temp_storage, temp_storage_bytes, d_input, d_input, num_items, difference_op, stream);
}
template <typename RandomAccessIteratorT, typename DifferenceOpT, typename NumItemsT = std::uint32_t>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED static CUB_RUNTIME_FUNCTION cudaError_t SubtractLeft(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
RandomAccessIteratorT d_input,
NumItemsT num_items,
DifferenceOpT difference_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return SubtractLeft(d_temp_storage, temp_storage_bytes, d_input, num_items, difference_op, stream);
}
template <typename InputIteratorT,
typename OutputIteratorT,
typename DifferenceOpT = cub::Difference,
typename NumItemsT = std::uint32_t>
static CUB_RUNTIME_FUNCTION cudaError_t SubtractRightCopy(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_input,
OutputIteratorT d_output,
NumItemsT num_items,
DifferenceOpT difference_op = {},
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DeviceAdjacentDifference::SubtractRightCopy");
constexpr bool may_alias = false;
constexpr bool read_left = false;
return AdjacentDifference<may_alias, read_left>(
d_temp_storage, temp_storage_bytes, d_input, d_output, num_items, difference_op, stream);
}
template <typename InputIteratorT, typename OutputIteratorT, typename DifferenceOpT, typename NumItemsT = std::uint32_t>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED static CUB_RUNTIME_FUNCTION cudaError_t SubtractRightCopy(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
InputIteratorT d_input,
OutputIteratorT d_output,
NumItemsT num_items,
DifferenceOpT difference_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return SubtractRightCopy(d_temp_storage, temp_storage_bytes, d_input, d_output, num_items, difference_op, stream);
}
template <typename RandomAccessIteratorT, typename DifferenceOpT = cub::Difference, typename NumItemsT = std::uint32_t>
static CUB_RUNTIME_FUNCTION cudaError_t SubtractRight(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
RandomAccessIteratorT d_input,
NumItemsT num_items,
DifferenceOpT difference_op = {},
cudaStream_t stream = 0)
{
CUB_DETAIL_NVTX_RANGE_SCOPE_IF(d_temp_storage, "cub::DeviceAdjacentDifference::SubtractRight");
constexpr bool may_alias = true;
constexpr bool read_left = false;
return AdjacentDifference<may_alias, read_left>(
d_temp_storage, temp_storage_bytes, d_input, d_input, num_items, difference_op, stream);
}
template <typename RandomAccessIteratorT, typename DifferenceOpT, typename NumItemsT>
CUB_DETAIL_RUNTIME_DEBUG_SYNC_IS_NOT_SUPPORTED static CUB_RUNTIME_FUNCTION cudaError_t SubtractRight(
void* d_temp_storage,
std::size_t& temp_storage_bytes,
RandomAccessIteratorT d_input,
NumItemsT num_items,
DifferenceOpT difference_op,
cudaStream_t stream,
bool debug_synchronous)
{
CUB_DETAIL_RUNTIME_DEBUG_SYNC_USAGE_LOG
return SubtractRight(d_temp_storage, temp_storage_bytes, d_input, num_items, difference_op, stream);
}
};
CUB_NAMESPACE_END