1//===----------------------------------------------------------------------===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___TYPE_TRAITS_IS_DEFAULT_CONSTRUCTIBLE_H 10#define _LIBCPP___TYPE_TRAITS_IS_DEFAULT_CONSTRUCTIBLE_H 11 12#include <__config> 13#include <__type_traits/integral_constant.h> 14 15#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16# pragma GCC system_header 17#endif 18 19_LIBCPP_BEGIN_NAMESPACE_STD 20 21template <class _Tp> 22struct _LIBCPP_TEMPLATE_VIS is_default_constructible : public integral_constant<bool, __is_constructible(_Tp)> {}; 23 24#if _LIBCPP_STD_VER >= 17 25template <class _Tp> 26inline constexpr bool is_default_constructible_v = __is_constructible(_Tp); 27#endif 28 29_LIBCPP_END_NAMESPACE_STD 30 31#endif // _LIBCPP___TYPE_TRAITS_IS_DEFAULT_CONSTRUCTIBLE_H 32