char_traits::to_int_type
static int_type to_int_type(const E& c);
The static member function returns ch, represented as type int_type. It should always be true that to_char_type(to_int_type(c) == c for any value of c.
char_traits::to_int_type
static int_type to_int_type(const E& c);
The static member function returns ch, represented as type int_type. It should always be true that to_char_type(to_int_type(c) == c for any value of c.