protected virtual member function
|single character (1)|
char_type do_tolower (char_type c) const;
const char_type* do_tolower (char_type* low, const char_type* high) const;
Convert to lowercase [virtual]
Virtual protected member function called by ctype::tolower to transform characters into lowercase.
Polymorphic derived classes can overwrite the behavior of this function.
See ctype::tolower for its default behavior in ctype.