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/*
* 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 random.h
* \brief Pseudo-random number generators.
*/
#pragma once
#include <thrust/detail/config.h>
#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 <thrust/detail/cstdint.h>
// RNGs
#include <thrust/random/discard_block_engine.h>
#include <thrust/random/linear_congruential_engine.h>
#include <thrust/random/linear_feedback_shift_engine.h>
#include <thrust/random/subtract_with_carry_engine.h>
#include <thrust/random/xor_combine_engine.h>
// distributions
#include <thrust/random/uniform_int_distribution.h>
#include <thrust/random/uniform_real_distribution.h>
#include <thrust/random/normal_distribution.h>
THRUST_NAMESPACE_BEGIN
/*! \addtogroup random Random Number Generation
* \{
*/
/*! \namespace thrust::random
* \brief \p thrust::random is the namespace which contains random number engine class templates,
* random number engine adaptor class templates, engines with predefined parameters,
* and random number distribution class templates. They are provided in a separate namespace
* for import convenience but are also aliased in the top-level \p thrust namespace for
* easy access.
*/
namespace random
{
/*! \addtogroup predefined_random Random Number Engines with Predefined Parameters
* \ingroup random
* \{
*/
/*! \typedef ranlux24
* \brief A random number engine with predefined parameters which implements the
* RANLUX level-3 random number generation algorithm.
* \note The 10000th consecutive invocation of a default-constructed object of type \p ranlux24
* shall produce the value \c 9901578 .
*/
typedef discard_block_engine<ranlux24_base, 223, 23> ranlux24;
/*! \typedef ranlux48
* \brief A random number engine with predefined parameters which implements the
* RANLUX level-4 random number generation algorithm.
* \note The 10000th consecutive invocation of a default-constructed object of type \p ranlux48
* shall produce the value \c 88229545517833 .
*/
typedef discard_block_engine<ranlux48_base, 389, 11> ranlux48;
/*! \typedef taus88
* \brief A random number engine with predefined parameters which implements
* L'Ecuyer's 1996 three-component Tausworthe random number generator.
*
* \note The 10000th consecutive invocation of a default-constructed object of type \p taus88
* shall produce the value \c 3535848941 .
*/
typedef xor_combine_engine<
linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 31u, 13u, 12u>,
0,
xor_combine_engine<
linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 29u, 2u, 4u>, 0,
linear_feedback_shift_engine<thrust::detail::uint32_t, 32u, 28u, 3u, 17u>, 0
>,
0
> taus88;
/*! \typedef default_random_engine
* \brief An implementation-defined "default" random number engine.
* \note \p default_random_engine is currently an alias for \p minstd_rand, and may change
* in a future version.
*/
typedef minstd_rand default_random_engine;
/*! \} // end predefined_random
*/
} // end random
/*! \} // end random
*/
// import names into thrust::
using random::ranlux24;
using random::ranlux48;
using random::taus88;
using random::default_random_engine;
THRUST_NAMESPACE_END
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