diff options
Diffstat (limited to 'libstdc++-v3/include/bits/utility.h')
| -rw-r--r-- | libstdc++-v3/include/bits/utility.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/utility.h b/libstdc++-v3/include/bits/utility.h index 6fa6b67..84d25e0 100644 --- a/libstdc++-v3/include/bits/utility.h +++ b/libstdc++-v3/include/bits/utility.h @@ -316,6 +316,23 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION inline constexpr sorted_equivalent_t sorted_equivalent{}; #endif +#if __glibcxx_function_ref // >= C++26 + template<auto> + struct nontype_t + { + explicit nontype_t() = default; + }; + + template<auto __val> + constexpr nontype_t<__val> nontype{}; + + template<typename> + inline constexpr bool __is_nontype_v = false; + + template<auto __val> + inline constexpr bool __is_nontype_v<nontype_t<__val>> = true; +#endif + _GLIBCXX_END_NAMESPACE_VERSION } // namespace |