mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
|
/*=============================================================================
|
||
|
|
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_RANDOM_GENERATE_ARRAY_HPP
|
||
|
|
#define SPROUT_RANDOM_GENERATE_ARRAY_HPP
|
||
|
|
|
||
|
|
#include <cstddef>
|
||
|
|
#include <sprout/config.hpp>
|
||
|
|
#include <sprout/array/array.hpp>
|
||
|
|
#include <sprout/utility/pair/pair.hpp>
|
||
|
|
|
||
|
|
namespace sprout {
|
||
|
|
namespace random {
|
||
|
|
//
|
||
|
|
// generate_array
|
||
|
|
//
|
||
|
|
template<std::size_t N, typename URNG>
|
||
|
|
inline SPROUT_CXX14_CONSTEXPR sprout::array<typename URNG::result_type, N>
|
||
|
|
generate_array(URNG& rng) {
|
||
|
|
sprout::array<typename URNG::result_type, N> result{{}};
|
||
|
|
for (std::size_t i = 0; i != N; ++i) {
|
||
|
|
result[i] = rng();
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
template<std::size_t N, typename URNG, typename Random, typename... Args>
|
||
|
|
static SPROUT_CONSTEXPR typename std::enable_if<
|
||
|
|
(sizeof...(Args) + 1 == N),
|
||
|
|
sprout::pair<sprout::array<typename URNG::result_type, N>, URNG> const
|
||
|
|
>::type generate_array_impl(Random const& rnd, Args const&... args) {
|
||
|
|
typedef sprout::pair<sprout::array<typename URNG::result_type, N>, URNG> const pair_type;
|
||
|
|
return pair_type{
|
||
|
|
sprout::array<typename URNG::result_type, N>{{args..., rnd.result()}},
|
||
|
|
rnd.engine()
|
||
|
|
};
|
||
|
|
}
|
||
|
|
template<std::size_t N, typename URNG, typename Random, typename... Args>
|
||
|
|
static SPROUT_CONSTEXPR typename std::enable_if<
|
||
|
|
(sizeof...(Args) + 1 < N),
|
||
|
|
sprout::pair<sprout::array<typename URNG::result_type, N>, URNG> const
|
||
|
|
>::type generate_array_impl(Random const& rnd, Args const&... args) {
|
||
|
|
return sprout::random::detail::generate_array_impl<N, URNG>(rnd(), args..., rnd.result());
|
||
|
|
}
|
||
|
|
} // namespace detail
|
||
|
|
//
|
||
|
|
// generate_array
|
||
|
|
//
|
||
|
|
template<std::size_t N, typename URNG>
|
||
|
|
inline SPROUT_CONSTEXPR sprout::pair<sprout::array<typename URNG::result_type, N>, URNG> const
|
||
|
|
generate_array(URNG const& rng) {
|
||
|
|
return sprout::random::detail::generate_array_impl<N, URNG>(rng());
|
||
|
|
}
|
||
|
|
} // namespace random
|
||
|
|
} // namespace sprout
|
||
|
|
|
||
|
|
#endif // #ifndef SPROUT_RANDOM_GENERATE_ARRAY_HPP
|