virtual protected member function
       charT do_tolower (charT c) const;
const charT* do_tolower (charT* low, const charT* high) const;

Convert to lowercase [virtual]

Virtual protected member function in charge of converting characters to lowercase, as described in public member function tolower (see ctype::tolower for details).

Polymorphic derived classes can redefine the behavior of this function.

See also