| // Copyright 2022 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef BASE_CXX20_IS_CONSTANT_EVALUATED_H_ |
| #define BASE_CXX20_IS_CONSTANT_EVALUATED_H_ |
| |
| namespace base { |
| |
| // Implementation of C++20's std::is_constant_evaluated. |
| // |
| // References: |
| // - https://en.cppreference.com/w/cpp/types/is_constant_evaluated |
| // - https://wg21.link/meta.const.eval |
| constexpr bool is_constant_evaluated() noexcept { |
| return __builtin_is_constant_evaluated(); |
| } |
| |
| } // namespace base |
| |
| #endif // BASE_CXX20_IS_CONSTANT_EVALUATED_H_ |
