experimental/array
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// <experimental/array> -*- C++ -*-
// Copyright (C) 2015-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file experimental/array
* This is a TS C++ Library header.
*/
#ifndef _GLIBCXX_EXPERIMENTAL_ARRAY
#define _GLIBCXX_EXPERIMENTAL_ARRAY 1
#pragma GCC system_header
#if __cplusplus <= 201103L
# include <bits/c++14_warning.h>
#else
#include <array>
#include <functional>
#include <experimental/type_traits>
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace experimental
{
inline namespace fundamentals_v2
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
#define __cpp_lib_experimental_make_array 201505
/**
* @defgroup make_array Array creation functions
* @ingroup experimental
*
* Array creation functions as described in N4529,
* Working Draft, C++ Extensions for Library Fundamentals, Version 2
*
* @{
*/
template <typename _Up>
struct __is_reference_wrapper : false_type
{};
template <typename _Up>
struct __is_reference_wrapper<reference_wrapper<_Up>> : true_type
{};
template <typename _Dest = void, typename... _Types>
constexpr auto
make_array(_Types&&... __t)
-> array<typename conditional_t<is_void_v<_Dest>,
common_type<_Types...>,
common_type<_Dest>>::type,
sizeof...(_Types)>
{
static_assert(__or_<
__not_<is_void<_Dest>>,
__and_<__not_<__is_reference_wrapper<decay_t<_Types>>>...>>
::value,
"make_array cannot be used without an explicit target type "
"if any of the types given is a reference_wrapper");
return {{ std::forward<_Types>(__t)... }};
}
template <typename _Tp, size_t _Nm, size_t... _Idx>
constexpr array<remove_cv_t<_Tp>, _Nm>
__to_array(_Tp (&__a)[_Nm], index_sequence<_Idx...>)
{
return {{__a[_Idx]...}};
}
template <typename _Tp, size_t _Nm>
constexpr array<remove_cv_t<_Tp>, _Nm>
to_array(_Tp (&__a)[_Nm])
noexcept(is_nothrow_constructible<remove_cv_t<_Tp>, _Tp&>::value)
{
return __to_array(__a, make_index_sequence<_Nm>{});
}
// @} group make_array
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace fundamentals_v2
} // namespace experimental
} // namespace std
#endif // C++14
#endif // _GLIBCXX_EXPERIMENTAL_ARRAY