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121 lines
3.7 KiB
121 lines
3.7 KiB
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*! \file random.h
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* \brief Pseudo-random number generators.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/cstdint.h>
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// RNGs
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#include <thrust/random/discard_block_engine.h>
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#include <thrust/random/linear_congruential_engine.h>
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#include <thrust/random/linear_feedback_shift_engine.h>
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#include <thrust/random/subtract_with_carry_engine.h>
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#include <thrust/random/xor_combine_engine.h>
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// distributions
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#include <thrust/random/uniform_int_distribution.h>
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#include <thrust/random/uniform_real_distribution.h>
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#include <thrust/random/normal_distribution.h>
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namespace thrust
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{
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/*! \addtogroup random Random Number Generation
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* \{
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*/
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/*! \namespace thrust::random
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* \brief \p thrust::random is the namespace which contains random number engine class templates,
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* random number engine adaptor class templates, engines with predefined parameters,
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* and random number distribution class templates. They are provided in a separate namespace
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* for import convenience but are also aliased in the top-level \p thrust namespace for
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* easy access.
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*/
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namespace random
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{
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/*! \addtogroup predefined_random Random Number Engines with Predefined Parameters
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* \ingroup random
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* \{
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*/
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/*! \typedef ranlux24
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* \brief A random number engine with predefined parameters which implements the
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* RANLUX level-3 random number generation algorithm.
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* \note The 10000th consecutive invocation of a default-constructed object of type \p ranlux24
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* shall produce the value \c 9901578 .
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*/
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typedef discard_block_engine<ranlux24_base, 223, 23> ranlux24;
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/*! \typedef ranlux48
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* \brief A random number engine with predefined parameters which implements the
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* RANLUX level-4 random number generation algorithm.
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* \note The 10000th consecutive invocation of a default-constructed object of type \p ranlux48
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* shall produce the value \c 88229545517833 .
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*/
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typedef discard_block_engine<ranlux48_base, 389, 11> ranlux48;
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/*! \typedef taus88
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* \brief A random number engine with predefined parameters which implements
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* L'Ecuyer's 1996 three-component Tausworthe random number generator.
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*
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* \note The 10000th consecutive invocation of a default-constructed object of type \p taus88
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* shall produce the value \c 3535848941 .
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*/
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typedef xor_combine_engine<
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linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 31u, 13u, 12u>,
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0,
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xor_combine_engine<
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linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 29u, 2u, 4u>, 0,
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linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 28u, 3u, 17u>, 0
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>,
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0
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> taus88;
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/*! \typedef default_random_engine
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* \brief An implementation-defined "default" random number engine.
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* \note \p default_random_engine is currently an alias for \p minstd_rand, and may change
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* in a future version.
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*/
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typedef minstd_rand default_random_engine;
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/*! \} // end predefined_random
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*/
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} // end random
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/*! \} // end random
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*/
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// import names into thrust::
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using random::ranlux24;
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using random::ranlux48;
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using random::taus88;
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using random::default_random_engine;
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} // end thrust
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