Sprout/sprout/algorithm/fit/shuffle.hpp
2013-02-07 23:12:57 +09:00

44 lines
1.5 KiB
C++

#ifndef SPROUT_ALGORITHM_FIT_SHUFFLE_HPP
#define SPROUT_ALGORITHM_FIT_SHUFFLE_HPP
#include <sprout/config.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/algorithm/fixed/shuffle.hpp>
#include <sprout/algorithm/fit/result_of.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>
inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type
shuffle_impl(
Container const& cont, UniformRandomNumberGenerator&& g,
typename sprout::container_traits<Container>::difference_type offset
)
{
return sprout::sub_copy(
sprout::get_internal(sprout::fixed::shuffle(cont, sprout::forward<UniformRandomNumberGenerator>(g))),
offset,
offset + sprout::size(cont)
);
}
} // namespace detail
//
// shuffle
//
template<typename Container, typename UniformRandomNumberGenerator>
inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type
shuffle(Container const& cont, UniformRandomNumberGenerator&& g) {
return sprout::fit::detail::shuffle_impl(
cont, sprout::forward<UniformRandomNumberGenerator>(g),
sprout::internal_begin_offset(cont)
);
}
} // namespace fit
} // namespace sprout
#endif // #ifndef SPROUT_ALGORITHM_FIT_SHUFFLE_HPP