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___CONCEPTS_SEMIREGULAR_H 10 #define _LIBCPP___CONCEPTS_SEMIREGULAR_H 11 12 #include <__concepts/constructible.h> 13 #include <__concepts/copyable.h> 14 #include <__config> 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 #if _LIBCPP_STD_VER > 17 23 24 // [concept.object] 25 26 template<class _Tp> 27 concept semiregular = copyable<_Tp> && default_initializable<_Tp>; 28 29 #endif // _LIBCPP_STD_VER > 17 30 31 _LIBCPP_END_NAMESPACE_STD 32 33 #endif // _LIBCPP___CONCEPTS_SEMIREGULAR_H 34