56fd68e7dd
CCCL (CUDA C++ Core Libraries) provides: - CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk) - Thrust: high-level parallel algorithms (transform_reduce, sort, scan) - libcudacxx: CUDA C++ standard library (atomics, barriers, memory) - cudax: experimental features (memory resources, allocators) - Tuning policies: per-SM hardware-specific algorithm parameters Competition optimization vectors mapped to CCCL: - Output TPS (83% weight): warp_reduce, block_reduce, device_topk - Input TPS (14% weight): device_scan, block_load, prefetch - Cache TPS (3% weight): prefix caching strategy patterns - Memory (0.9 util): pooled/cached/buddy allocators Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only) License: Apache-2.0
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
// SPDX-FileCopyrightText: Copyright (c) 2008-2013, NVIDIA Corporation. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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/*! \file tabulate.h
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* \brief Fills a range with the tabulation of a function
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
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# pragma GCC system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
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# pragma clang system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
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# pragma system_header
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#endif // no system header
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#include <thrust/detail/execution_policy.h>
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THRUST_NAMESPACE_BEGIN
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/*! \addtogroup transformations
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* \{
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*/
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/*! \p tabulate fills the range <tt>[first, last)</tt> with the value of a function applied to each
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* element's index.
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*
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* For each iterator \c i in the range <tt>[first, last)</tt>, \p tabulate performs the assignment
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* <tt>*i = unary_op(i - first)</tt>.
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*
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* The algorithm's execution is parallelized as determined by \p exec.
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*
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* \param exec The execution policy to use for parallelization.
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* \param first The beginning of the range.
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* \param last The end of the range.
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* \param unary_op The unary operation to apply.
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*
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* \tparam DerivedPolicy The name of the derived execution policy.
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* \tparam ForwardIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/forward_iterator">Forward
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* Iterator</a>, and \p ForwardIterator is mutable, and if \c x and \c y are objects of \c ForwardIterator's \c
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* value_type, then <tt>x + y</tt> is defined, and if \c T is \p ForwardIterator's \c value_type, then <tt>T(0)</tt> is
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* defined.
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* \tparam UnaryOperation The function's return type must be convertible to \c OutputIterator's \c value_type.
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*
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* The following code snippet demonstrates how to use \p tabulate to generate the first \c n non-positive integers
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* using the \p thrust::host execution policy for parallelization:
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*
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* \code
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* #include <thrust/tabulate.h>
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* #include <thrust/functional.h>
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* #include <thrust/execution_policy.h>
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* ...
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* const int N = 10;
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* int A[N];
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* thrust::tabulate(thrust::host, A, A + 10, ::cuda::std::negate<int>());
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* // A is now {0, -1, -2, -3, -4, -5, -6, -7, -8, -9}
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* \endcode
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*
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* \see thrust::fill
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* \see thrust::generate
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* \see thrust::sequence
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*
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* \verbatim embed:rst:leading-asterisk
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* .. versionadded:: 2.2.0
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* \endverbatim
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*/
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template <typename DerivedPolicy, typename ForwardIterator, typename UnaryOperation>
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_CCCL_HOST_DEVICE void
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tabulate(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
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ForwardIterator first,
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ForwardIterator last,
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UnaryOperation unary_op);
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/*! \p tabulate fills the range <tt>[first, last)</tt> with the value of a function applied to each
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* element's index.
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*
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* For each iterator \c i in the range <tt>[first, last)</tt>, \p tabulate performs the assignment
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* <tt>*i = unary_op(i - first)</tt>.
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*
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* \param first The beginning of the range.
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* \param last The end of the range.
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* \param unary_op The unary operation to apply.
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*
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* \tparam ForwardIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/forward_iterator">Forward
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* Iterator</a>, and \p ForwardIterator is mutable, and if \c x and \c y are objects of \c ForwardIterator's \c
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* value_type, then <tt>x + y</tt> is defined, and if \c T is \p ForwardIterator's \c value_type, then <tt>T(0)</tt> is
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* defined.
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* \tparam UnaryOperation The function's return type must be convertible to \c OutputIterator's \c value_type.
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*
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* The following code snippet demonstrates how to use \p tabulate to generate the first \c n non-positive integers:
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*
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* \code
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* #include <thrust/tabulate.h>
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* #include <thrust/functional.h>
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* ...
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* const int N = 10;
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* int A[N];
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* thrust::tabulate(A, A + 10, ::cuda::std::negate<int>());
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* // A is now {0, -1, -2, -3, -4, -5, -6, -7, -8, -9}
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* \endcode
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*
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* \see thrust::fill
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* \see thrust::generate
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* \see thrust::sequence
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*
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* \verbatim embed:rst:leading-asterisk
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* .. versionadded:: 2.2.0
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* \endverbatim
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*/
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template <typename ForwardIterator, typename UnaryOperation>
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void tabulate(ForwardIterator first, ForwardIterator last, UnaryOperation unary_op);
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/*! \} // end transformations
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*/
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THRUST_NAMESPACE_END
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#include <thrust/detail/tabulate.inl>
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