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
197 lines
7.5 KiB
C++
197 lines
7.5 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 generate.h
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* \brief Fills a range with values "generated" from a function of no arguments
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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 generate assigns the result of invoking \p gen, a function object that takes no arguments,
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* to each element in the range <tt>[first,last)</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 first element in the range of interest.
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* \param last The last element in the range of interest.
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* \param gen A function argument, taking no parameters, used to generate values to assign to
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* elements in the range <tt>[first,last)</tt>.
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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.
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* \tparam Generator A nullary function with a return type convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to fill a \c host_vector with random numbers,
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* using the standard C library function \c rand using the \p thrust::host execution policy for parallelization:
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*
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* \code
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* #include <thrust/generate.h>
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* #include <thrust/host_vector.h>
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* #include <thrust/execution_policy.h>
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* #include <cstdlib>
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* ...
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* thrust::host_vector<int> v(10);
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* srand(13);
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* thrust::generate(thrust::host, v.begin(), v.end(), rand);
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*
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* // the elements of v are now pseudo-random numbers
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* \endcode
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*
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* \see generate_n
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* \see https://en.cppreference.com/w/cpp/algorithm/generate
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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 Generator>
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_CCCL_HOST_DEVICE void
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generate(const thrust::detail::execution_policy_base<DerivedPolicy>& exec,
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ForwardIterator first,
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ForwardIterator last,
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Generator gen);
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/*! \p generate assigns the result of invoking \p gen, a function object that takes no arguments,
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* to each element in the range <tt>[first,last)</tt>.
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*
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* \param first The first element in the range of interest.
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* \param last The last element in the range of interest.
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* \param gen A function argument, taking no parameters, used to generate values to assign to
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* elements in the range <tt>[first,last)</tt>.
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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.
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* \tparam Generator A nullary function with a return type convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to fill a \c host_vector with random numbers,
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* using the standard C library function \c rand.
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*
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* \code
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* #include <thrust/generate.h>
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* #include <thrust/host_vector.h>
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* #include <thrust/execution_policy.h>
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* #include <cstdlib>
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* ...
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* thrust::host_vector<int> v(10);
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* srand(13);
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* thrust::generate(v.begin(), v.end(), rand);
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*
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* // the elements of v are now pseudo-random numbers
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* \endcode
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*
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* \see generate_n
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* \see https://en.cppreference.com/w/cpp/algorithm/generate
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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 Generator>
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void generate(ForwardIterator first, ForwardIterator last, Generator gen);
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/*! \p generate_n assigns the result of invoking \p gen, a function object that takes no arguments,
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* to each element in the range <tt>[first,first + n)</tt>. The return value is <tt>first + n</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 first element in the range of interest.
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* \param n The size of the range of interest.
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* \param gen A function argument, taking no parameters, used to generate values to assign to
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* elements in the range <tt>[first,first + n)</tt>.
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*
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* \tparam DerivedPolicy The name of the derived execution policy.
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* \tparam OutputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output
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* Iterator</a>. \tparam Size is an integral type (either signed or unsigned).
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* \tparam Generator A nullary function with a return type convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to fill a \c host_vector with random numbers,
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* using the standard C library function \c rand using the \p thrust::host execution policy for parallelization:
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*
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* \code
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* #include <thrust/generate.h>
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* #include <thrust/host_vector.h>
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* #include <thrust/execution_policy.h>
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* #include <cstdlib>
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* ...
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* thrust::host_vector<int> v(10);
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* srand(13);
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* thrust::generate_n(thrust::host, v.begin(), 10, rand);
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*
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* // the elements of v are now pseudo-random numbers
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* \endcode
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*
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* \see generate
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* \see https://en.cppreference.com/w/cpp/algorithm/generate
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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 OutputIterator, typename Size, typename Generator>
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_CCCL_HOST_DEVICE OutputIterator generate_n(
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const thrust::detail::execution_policy_base<DerivedPolicy>& exec, OutputIterator first, Size n, Generator gen);
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/*! \p generate_n assigns the result of invoking \p gen, a function object that takes no arguments,
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* to each element in the range <tt>[first,first + n)</tt>. The return value is <tt>first + n</tt>.
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*
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* \param first The first element in the range of interest.
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* \param n The size of the range of interest.
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* \param gen A function argument, taking no parameters, used to generate values to assign to
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* elements in the range <tt>[first,first + n)</tt>.
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*
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* \tparam OutputIterator is a model of <a href="https://en.cppreference.com/w/cpp/iterator/output_iterator">Output
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* Iterator</a>. \tparam Size is an integral type (either signed or unsigned).
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* \tparam Generator A nullary function with a return type convertible to \p ForwardIterator's \c value_type.
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*
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* The following code snippet demonstrates how to fill a \c host_vector with random numbers,
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* using the standard C library function \c rand.
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*
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* \code
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* #include <thrust/generate.h>
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* #include <thrust/host_vector.h>
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* #include <stdlib.h>
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* ...
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* thrust::host_vector<int> v(10);
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* srand(13);
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* thrust::generate_n(v.begin(), 10, rand);
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*
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* // the elements of v are now pseudo-random numbers
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* \endcode
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*
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* \see generate
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* \see https://en.cppreference.com/w/cpp/algorithm/generate
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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 OutputIterator, typename Size, typename Generator>
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OutputIterator generate_n(OutputIterator first, Size n, Generator gen);
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/*! \} // end transformations
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*/
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THRUST_NAMESPACE_END
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#include <thrust/detail/generate.inl>
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