### - u -

- uncaught_exception() : std
- uncaught_exceptions() : std
- undeclare_no_pointers() : std
- undeclare_reachable() : std
- unexpected() : std
- uninitialized_copy() : std
- uninitialized_copy_n() : __gnu_cxx , std
- uninitialized_default_construct() : std
- uninitialized_default_construct_n() : std
- uninitialized_fill() : std
- uninitialized_fill_n() : std
- uninitialized_move() : std
- uninitialized_move_n() : std
- uninitialized_value_construct() : std
- uninitialized_value_construct_n() : std
- unique() : std
- unique_copy() : std
- unitbuf() : std
- upper_bound() : std
- uppercase() : std
- use_facet() : std