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_TRIVIALLY_COPYABLE_H 10 #define _LIBCPP___TYPE_TRAITS_IS_TRIVIALLY_COPYABLE_H 11 12 #include <__config> 13 #include <__type_traits/integral_constant.h> 14 #include <cstdint> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template <class _Tp> 23 struct _LIBCPP_TEMPLATE_VIS is_trivially_copyable : public integral_constant<bool, __is_trivially_copyable(_Tp)> {}; 24 25 #if _LIBCPP_STD_VER >= 17 26 template <class _Tp> 27 inline constexpr bool is_trivially_copyable_v = __is_trivially_copyable(_Tp); 28 #endif 29 30 #if _LIBCPP_STD_VER >= 20 31 template <class _Tp> 32 inline constexpr bool __is_cheap_to_copy = is_trivially_copyable_v<_Tp> && sizeof(_Tp) <= sizeof(std::intmax_t); 33 #endif 34 35 _LIBCPP_END_NAMESPACE_STD 36 37 #endif // _LIBCPP___TYPE_TRAITS_IS_TRIVIALLY_COPYABLE_H 38