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