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_CONSTANT_EVALUATED_H
10 #define _LIBCPP___TYPE_TRAITS_IS_CONSTANT_EVALUATED_H
11 
12 #include <__config>
13 
14 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15 #  pragma GCC system_header
16 #endif
17 
18 _LIBCPP_BEGIN_NAMESPACE_STD
19 
20 #if _LIBCPP_STD_VER > 17
21 _LIBCPP_INLINE_VISIBILITY
22 inline constexpr bool is_constant_evaluated() noexcept {
23   return __builtin_is_constant_evaluated();
24 }
25 #endif
26 
27 inline _LIBCPP_CONSTEXPR
28 bool __libcpp_is_constant_evaluated() _NOEXCEPT { return __builtin_is_constant_evaluated(); }
29 
30 _LIBCPP_END_NAMESPACE_STD
31 
32 #endif // _LIBCPP___TYPE_TRAITS_IS_CONSTANT_EVALUATED_H
33