IGES import/export.
using Double = doubleusing Entity_container = std::vector< Pointer >using Integer = longusing Single = floatenum Entity_type: intenum Section: charenum Unit: intclass vtb::iges::Graphicsclass vtb::iges::Nullclass vtb::iges::iges_ostreamstruct vtb::iges::Directory_entrystruct vtb::iges::Entitystruct vtb::iges::stringstruct vtb::iges::timestampoperator<<(std::ostream & out, Unit rhs) -> std::ostream &operator<<(iges_ostream & out, const timestamp & rhs) -> iges_ostream &operator<<(std::ostream & out, const timestamp::iges_date_pp & rhs) -> std::ostream &operator<<(std::ostream & out, const timestamp & rhs) -> std::ostream &operator<<(iges_ostream & out, const string & rhs) -> iges_ostream &operator<<(std::ostream & out, const string::string_pp & rhs) -> std::ostream &operator<<(std::ostream & out, const string & rhs) -> std::ostream &operator<<(std::ostream & out, const Graphics & rhs) -> std::ostream &operator<<(iges_ostream & out, const Entity & rhs) -> iges_ostream &operator<<(std::ostream & out, const Directory_entry & rhs) -> std::ostream &operator>>(std::istream & in, Unit & rhs) -> std::istream &operator>>(std::istream & in, timestamp & rhs) -> std::istream &operator>>(std::istream & in, string & rhs) -> std::istream &operator>>(std::istream & in, Graphics & rhs) -> std::istream &operator>>(const char * text, Directory_entry & entry) -> const char *to_string(Unit rhs) -> const char *