gcc/libstdc++-v3/include/experimental/tuple
Jonathan Wakely 22274fac01 Makefile.am: Add new header.
* include/Makefile.am: Add new header.
	* include/Makefile.in: Regenerate.
	* include/experimental/tuple: New
	* doc/xml/manual/status_cxx2014.xml: Update.
	* doc/html/manual/status.html: Regenerate.
	* testsuite/experimental/feat-lib-fund.cc: Test for new header.
	* testsuite/experimental/tuple/apply.cc: New.

From-SVN: r215930
2014-10-06 13:26:45 +01:00

71 lines
2.1 KiB
C++

// <experimental/tuple> -*- C++ -*-
// Copyright (C) 2014 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/tuple
* This is a TS C++ Library header.
*/
#ifndef _GLIBCXX_EXPERIMENTAL_TUPLE
#define _GLIBCXX_EXPERIMENTAL_TUPLE 1
#pragma GCC system_header
#if __cplusplus <= 201103L
# include <bits/c++14_warning.h>
#else
#include <tuple>
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace experimental
{
inline namespace fundamentals_v1
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template <typename _Fn, typename _Tuple, std::size_t... _Idx>
constexpr decltype(auto)
__apply_impl(_Fn&& f, _Tuple&& t, std::index_sequence<_Idx...>)
{ return std::forward<_Fn>(f)(get<_Idx>(forward<_Tuple>(t))...); }
template <typename _Fn, typename _Tuple>
constexpr decltype(auto)
apply(_Fn&& f, _Tuple&& t)
{
using _Indices =
std::make_index_sequence<std::tuple_size<std::decay_t<_Tuple>>::value>;
return __apply_impl(std::forward<_Fn>(f), std::forward<_Tuple>(t),
_Indices{});
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace fundamentals_v1
} // namespace experimental
} // namespace std
#endif // C++14
#endif // _GLIBCXX_EXPERIMENTAL_TUPLE