derek.holloway
7502bf64a4
CodeQL / Analyze (actions) (push) Canceled after 0s
CodeQL / Analyze (python) (push) Canceled after 0s
pre-commit / pre-commit (push) Canceled after 0s
Multi-Arch CI / setup (push) Canceled after 0s
Publish build_manylinux_x86_64 images / publish_build_manylinux_x86_64 (push) Canceled after 0s
Setup (Multi-Arch) / setup (push) Canceled after 0s
Multi-Arch CI / Linux::${{ fromJSON(needs.setup.outputs.linux_build_config || '{}').build_variant_label || 'skip' }} (push) Canceled after 0s
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Publish no_rocm_image_ubi10 image / publish_no_rocm_image_ubi10 (push) Canceled after 0s
Multi-Arch CI / Windows::${{ fromJSON(needs.setup.outputs.windows_build_config || '{}').build_variant_label || 'skip' }} (push) Canceled after 0s
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Multi-Arch CI / Manifest Diff (push) Canceled after 0s
TheRock Manifest Diff Report / Generate Manifest Diff Report (push) Canceled after 0s
Multi-Arch CI / CI Summary (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04 (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04_ocl_rt images / publish_no_rocm_image_ubuntu24_04_ocl_rt (push) Canceled after 0s
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_rocgdb (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04_rocgdb images / publish_no_rocm_image_ubuntu24_04_rocgdb (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_ocl_rt (push) Canceled after 0s
Publish TheRock Docker image / build-and-push-image (push) Canceled after 0s
Unit Tests / Unit Tests :: ubuntu-24.04 (push) Canceled after 0s
Unit Tests / Unit Tests :: windows-2022 (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_media (push) Canceled after 0s
Unit Tests / Unit Tests Summary (push) Canceled after 0s
Publish no_rocm_image_ubuntu24_04 images / publish_no_rocm_image_ubuntu24_04_openmpi (push) Canceled after 0s
245 lines
11 KiB
C++
245 lines
11 KiB
C++
/*
|
|
* Copyright 2008-2013 NVIDIA Corporation
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
/*! \file adjacent_difference.h
|
|
* \brief Compute difference between consecutive elements of a range
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <thrust/detail/config.h>
|
|
|
|
#include <thrust/detail/execution_policy.h>
|
|
|
|
THRUST_NAMESPACE_BEGIN
|
|
|
|
/*! \addtogroup transformations Transformations
|
|
* \{
|
|
*/
|
|
|
|
/*! \p adjacent_difference calculates the differences of adjacent elements in the
|
|
* range <tt>[first, last)</tt>. That is, <tt>\*first</tt> is assigned to
|
|
* <tt>\*result</tt>, and, for each iterator \p i in the range
|
|
* <tt>[first + 1, last)</tt>, the difference of <tt>\*i</tt> and <tt>*(i - 1)</tt>
|
|
* is assigned to <tt>\*(result + (i - first))</tt>.
|
|
*
|
|
* This version of \p adjacent_difference uses <tt>operator-</tt> to calculate
|
|
* differences.
|
|
*
|
|
* The algorithm's execution is parallelized as determined by \p exec.
|
|
*
|
|
* \param exec The execution policy to use for parallelization.
|
|
* \param first The beginning of the input range.
|
|
* \param last The end of the input range.
|
|
* \param result The beginning of the output range.
|
|
* \return The iterator <tt>result + (last - first)</tt>
|
|
*
|
|
* \tparam DerivedPolicy The name of the derived execution policy.
|
|
* \tparam InputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/input_iterator">Input
|
|
* Iterator</a>, and \c x and \c y are objects of \p InputIterator's \c value_type, then \c x - \c is defined, and \p
|
|
* InputIterator's \c value_type is convertible to a type in \p OutputIterator's set of \c value_types, and the return
|
|
* type of <tt>x - y</tt> is convertible to a type in \p OutputIterator's set of \c value_types. \tparam OutputIterator
|
|
* is a model of <a href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output Iterator</a>.
|
|
*
|
|
* \remark Note that \p result is permitted to be the same iterator as \p first. This is
|
|
* useful for computing differences "in place".
|
|
*
|
|
* The following code snippet demonstrates how to use \p adjacent_difference to compute
|
|
* the difference between adjacent elements of a range using the \p thrust::device execution policy:
|
|
*
|
|
* \code
|
|
* #include <thrust/adjacent_difference.h>
|
|
* #include <thrust/device_vector.h>
|
|
* #include <thrust/execution_policy.h>
|
|
* ...
|
|
* int h_data[8] = {1, 2, 1, 2, 1, 2, 1, 2};
|
|
* thrust::device_vector<int> d_data(h_data, h_data + 8);
|
|
* thrust::device_vector<int> d_result(8);
|
|
*
|
|
* thrust::adjacent_difference(thrust::device, d_data.begin(), d_data.end(), d_result.begin());
|
|
*
|
|
* // d_result is now [1, 1, -1, 1, -1, 1, -1, 1]
|
|
* \endcode
|
|
*
|
|
* \see https://en.cppreference.com/w/cpp/algorithm/adjacent_difference
|
|
* \see inclusive_scan
|
|
*/
|
|
template <typename DerivedPolicy, typename InputIterator, typename OutputIterator>
|
|
THRUST_HOST_DEVICE OutputIterator adjacent_difference(
|
|
const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
|
|
InputIterator first,
|
|
InputIterator last,
|
|
OutputIterator result);
|
|
|
|
/*! \p adjacent_difference calculates the differences of adjacent elements in the
|
|
* range <tt>[first, last)</tt>. That is, <tt>*first</tt> is assigned to
|
|
* <tt>\*result</tt>, and, for each iterator \p i in the range
|
|
* <tt>[first + 1, last)</tt>, <tt>binary_op(\*i, \*(i - 1))</tt> is assigned to
|
|
* <tt>\*(result + (i - first))</tt>.
|
|
*
|
|
* This version of \p adjacent_difference uses the binary function \p binary_op to
|
|
* calculate differences.
|
|
*
|
|
* The algorithm's execution is parallelized as determined by \p exec.
|
|
*
|
|
* \param exec The execution policy to use for parallelization.
|
|
* \param first The beginning of the input range.
|
|
* \param last The end of the input range.
|
|
* \param result The beginning of the output range.
|
|
* \param binary_op The binary function used to compute differences.
|
|
* \return The iterator <tt>result + (last - first)</tt>
|
|
*
|
|
* \tparam DerivedPolicy The name of the derived execution policy.
|
|
* \tparam InputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/input_iterator">Input
|
|
* Iterator</a>, and \p InputIterator's \c value_type is convertible to \p BinaryFunction's \c first_argument_type and
|
|
* \c second_argument_type, and \p InputIterator's \c value_type is convertible to a type in \p OutputIterator's set of
|
|
* \c value_types. \tparam OutputIterator is a model of <a
|
|
* href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output Iterator</a>. \tparam BinaryFunction's \c
|
|
* result_type is convertible to a type in \p OutputIterator's set of \c value_types.
|
|
*
|
|
* \remark Note that \p result is permitted to be the same iterator as \p first. This is
|
|
* useful for computing differences "in place".
|
|
*
|
|
* The following code snippet demonstrates how to use \p adjacent_difference to compute
|
|
* the sum between adjacent elements of a range using the \p thrust::device execution policy:
|
|
*
|
|
* \code
|
|
* #include <thrust/adjacent_difference.h>
|
|
* #include <thrust/functional.h>
|
|
* #include <thrust/device_vector.h>
|
|
* #include <thrust/execution_policy.h>
|
|
* ...
|
|
* int h_data[8] = {1, 2, 1, 2, 1, 2, 1, 2};
|
|
* thrust::device_vector<int> d_data(h_data, h_data + 8);
|
|
* thrust::device_vector<int> d_result(8);
|
|
*
|
|
* thrust::adjacent_difference(thrust::device, d_data.begin(), d_data.end(), d_result.begin(), thrust::plus<int>());
|
|
*
|
|
* // d_result is now [1, 3, 3, 3, 3, 3, 3, 3]
|
|
* \endcode
|
|
*
|
|
* \see https://en.cppreference.com/w/cpp/algorithm/adjacent_difference
|
|
* \see inclusive_scan
|
|
*/
|
|
template <typename DerivedPolicy, typename InputIterator, typename OutputIterator, typename BinaryFunction>
|
|
THRUST_HOST_DEVICE OutputIterator adjacent_difference(
|
|
const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
|
|
InputIterator first,
|
|
InputIterator last,
|
|
OutputIterator result,
|
|
BinaryFunction binary_op);
|
|
|
|
/*! \p adjacent_difference calculates the differences of adjacent elements in the
|
|
* range <tt>[first, last)</tt>. That is, <tt>\*first</tt> is assigned to
|
|
* <tt>\*result</tt>, and, for each iterator \p i in the range
|
|
* <tt>[first + 1, last)</tt>, the difference of <tt>\*i</tt> and <tt>*(i - 1)</tt>
|
|
* is assigned to <tt>\*(result + (i - first))</tt>.
|
|
*
|
|
* This version of \p adjacent_difference uses <tt>operator-</tt> to calculate
|
|
* differences.
|
|
*
|
|
* \param first The beginning of the input range.
|
|
* \param last The end of the input range.
|
|
* \param result The beginning of the output range.
|
|
* \return The iterator <tt>result + (last - first)</tt>
|
|
*
|
|
* \tparam InputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/input_iterator">Input
|
|
* Iterator</a>, and \c x and \c y are objects of \p InputIterator's \c value_type, then \c x - \c is defined, and \p
|
|
* InputIterator's \c value_type is convertible to a type in \p OutputIterator's set of \c value_types, and the return
|
|
* type of <tt>x - y</tt> is convertible to a type in \p OutputIterator's set of \c value_types. \tparam OutputIterator
|
|
* is a model of <a href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output Iterator</a>.
|
|
*
|
|
* \remark Note that \p result is permitted to be the same iterator as \p first. This is
|
|
* useful for computing differences "in place".
|
|
*
|
|
* The following code snippet demonstrates how to use \p adjacent_difference to compute
|
|
* the difference between adjacent elements of a range.
|
|
*
|
|
* \code
|
|
* #include <thrust/adjacent_difference.h>
|
|
* #include <thrust/device_vector.h>
|
|
* ...
|
|
* int h_data[8] = {1, 2, 1, 2, 1, 2, 1, 2};
|
|
* thrust::device_vector<int> d_data(h_data, h_data + 8);
|
|
* thrust::device_vector<int> d_result(8);
|
|
*
|
|
* thrust::adjacent_difference(d_data.begin(), d_data.end(), d_result.begin());
|
|
*
|
|
* // d_result is now [1, 1, -1, 1, -1, 1, -1, 1]
|
|
* \endcode
|
|
*
|
|
* \see https://en.cppreference.com/w/cpp/algorithm/adjacent_difference
|
|
* \see inclusive_scan
|
|
*/
|
|
template <typename InputIterator, typename OutputIterator>
|
|
OutputIterator adjacent_difference(InputIterator first, InputIterator last, OutputIterator result);
|
|
|
|
/*! \p adjacent_difference calculates the differences of adjacent elements in the
|
|
* range <tt>[first, last)</tt>. That is, <tt>*first</tt> is assigned to
|
|
* <tt>\*result</tt>, and, for each iterator \p i in the range
|
|
* <tt>[first + 1, last)</tt>, <tt>binary_op(\*i, \*(i - 1))</tt> is assigned to
|
|
* <tt>\*(result + (i - first))</tt>.
|
|
*
|
|
* This version of \p adjacent_difference uses the binary function \p binary_op to
|
|
* calculate differences.
|
|
*
|
|
* \param first The beginning of the input range.
|
|
* \param last The end of the input range.
|
|
* \param result The beginning of the output range.
|
|
* \param binary_op The binary function used to compute differences.
|
|
* \return The iterator <tt>result + (last - first)</tt>
|
|
*
|
|
* \tparam InputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/input_iterator">Input
|
|
* Iterator</a>, and \p InputIterator's \c value_type is convertible to \p BinaryFunction's \c first_argument_type and
|
|
* \c second_argument_type, and \p InputIterator's \c value_type is convertible to a type in \p OutputIterator's set of
|
|
* \c value_types. \tparam OutputIterator is a model of <a
|
|
* href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output Iterator</a>. \tparam BinaryFunction's \c
|
|
* result_type is convertible to a type in \p OutputIterator's set of \c value_types.
|
|
*
|
|
* \remark Note that \p result is permitted to be the same iterator as \p first. This is
|
|
* useful for computing differences "in place".
|
|
*
|
|
* The following code snippet demonstrates how to use \p adjacent_difference to compute
|
|
* the sum between adjacent elements of a range.
|
|
*
|
|
* \code
|
|
* #include <thrust/adjacent_difference.h>
|
|
* #include <thrust/functional.h>
|
|
* #include <thrust/device_vector.h>
|
|
* ...
|
|
* int h_data[8] = {1, 2, 1, 2, 1, 2, 1, 2};
|
|
* thrust::device_vector<int> d_data(h_data, h_data + 8);
|
|
* thrust::device_vector<int> d_result(8);
|
|
*
|
|
* thrust::adjacent_difference(d_data.begin(), d_data.end(), d_result.begin(), thrust::plus<int>());
|
|
*
|
|
* // d_result is now [1, 3, 3, 3, 3, 3, 3, 3]
|
|
* \endcode
|
|
*
|
|
* \see https://en.cppreference.com/w/cpp/algorithm/adjacent_difference
|
|
* \see inclusive_scan
|
|
*/
|
|
template <typename InputIterator, typename OutputIterator, typename BinaryFunction>
|
|
OutputIterator
|
|
adjacent_difference(InputIterator first, InputIterator last, OutputIterator result, BinaryFunction binary_op);
|
|
|
|
/*! \}
|
|
*/
|
|
|
|
THRUST_NAMESPACE_END
|
|
|
|
#include <thrust/detail/adjacent_difference.inl>
|