| libstdc++
    | 
| Public Types | |
| typedef integral_constant< bool, __v > | type | 
| typedef bool | value_type | 
| Public Member Functions | |
| constexpr | operator value_type () const noexcept | 
| constexpr value_type | operator() () const noexcept | 
| Static Public Attributes | |
| static constexpr bool | value |