36 std::ostream &operator<<(std::ostream &out, const SOM_element &s) {  in operator <<()  argument
37     out << "(";  in operator <<()
39         out << s.w[i];  in operator <<()
41             out << ",";  in operator <<()
44     out << ")";  in operator <<()
45     return out;  in operator <<()
59 std::ostream &operator<<(std::ostream &out, const search_result_type &s) {  in operator <<()  argument
60     out << "<";  in operator <<()
61     out << std::get<RADIUS>(s);  in operator <<()
62     out << ", " << std::get<XV>(s);  in operator <<()
63     out << ", ";  in operator <<()
64     out << std::get<YV>(s);  in operator <<()
65     out << ">";  in operator <<()
66     return out;  in operator <<()