cub/device/device_adjacent_difference.cuh
File members: cub/device/device_adjacent_difference.cuh
/******************************************************************************
* Copyright (c) 2011-2021, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the NVIDIA CORPORATION nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/
#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/integer_traits.h>
#include <cstdint>
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 = ::cuda::std::minus<>,
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);
}
#ifndef _CCCL_DOXYGEN_INVOKED // Do not document
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);
}
#endif // _CCCL_DOXYGEN_INVOKED
template <typename RandomAccessIteratorT,
typename DifferenceOpT = ::cuda::std::minus<>,
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);
}
#ifndef _CCCL_DOXYGEN_INVOKED // Do not document
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);
}
#endif // _CCCL_DOXYGEN_INVOKED
template <typename InputIteratorT,
typename OutputIteratorT,
typename DifferenceOpT = ::cuda::std::minus<>,
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);
}
#ifndef _CCCL_DOXYGEN_INVOKED // Do not document
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);
}
#endif // _CCCL_DOXYGEN_INVOKED
template <typename RandomAccessIteratorT,
typename DifferenceOpT = ::cuda::std::minus<>,
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);
}
#ifndef _CCCL_DOXYGEN_INVOKED // Do not document
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);
}
#endif // _CCCL_DOXYGEN_INVOKED
};
CUB_NAMESPACE_END