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Sprout/sprout/algorithm/fit/shuffle_result.hpp
2014-01-08 16:48:12 +09:00

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/*=============================================================================
Copyright (c) 2011-2014 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_ALGORITHM_FIT_SHUFFLE_RESULT_HPP
#define SPROUT_ALGORITHM_FIT_SHUFFLE_RESULT_HPP
#include <sprout/config.hpp>
#include <sprout/tuple/tuple/tuple.hpp>
#include <sprout/tuple/tuple/get.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/algorithm/fixed/shuffle_result.hpp>
#include <sprout/algorithm/fit/results.hpp>
#include <sprout/sub_array/sub_array.hpp>
#include <sprout/sub_array/sub.hpp>
namespace sprout {
namespace fit {
namespace detail {
template<typename Container, typename UniformRandomNumberGenerator, typename Shuffled>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<
typename sprout::fit::results::algorithm<Container>::type,
typename std::decay<UniformRandomNumberGenerator>::type
>
shuffle_result_impl_1(
Shuffled const& shuffled,
typename sprout::container_traits<Container>::difference_type offset
)
{
typedef sprout::tuples::tuple<
typename sprout::fit::results::algorithm<Container>::type,
typename std::decay<UniformRandomNumberGenerator>::type
> result_type;
return result_type(
sprout::sub_copy(
sprout::get_internal(sprout::tuples::get<0>(shuffled)),
offset,
offset + sprout::size(sprout::tuples::get<0>(shuffled))
),
sprout::tuples::get<1>(shuffled)
);
}
template<typename Container, typename UniformRandomNumberGenerator>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<
typename sprout::fit::results::algorithm<Container>::type,
typename std::decay<UniformRandomNumberGenerator>::type
>
shuffle_result_impl(
Container const& cont, UniformRandomNumberGenerator&& g,
typename sprout::container_traits<Container>::difference_type offset
)
{
return sprout::fit::detail::shuffle_result_impl_1<Container, UniformRandomNumberGenerator>(
sprout::fixed::shuffle_result(cont, sprout::forward<UniformRandomNumberGenerator>(g)),
offset
);
}
} // namespace detail
//
// shuffle_result
//
template<typename Container, typename UniformRandomNumberGenerator>
inline SPROUT_CONSTEXPR sprout::tuples::tuple<
typename sprout::fit::results::algorithm<Container>::type,
typename std::decay<UniformRandomNumberGenerator>::type
>
shuffle_result(Container const& cont, UniformRandomNumberGenerator&& g) {
return sprout::fit::detail::shuffle_result_impl(
cont, sprout::forward<UniformRandomNumberGenerator>(g),
sprout::internal_begin_offset(cont)
);
}
} // namespace fit
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIT_SHUFFLE_RESULT_HPP