+ // pv_info_to_uci() returns a string with information on the current PV line
+ // formatted according to UCI specification and eventually writes the info
+ // to a log file. It is called at each iteration or after a new pv is found.
+
+ std::string RootMove::pv_info_to_uci(const Position& pos, Value alpha, Value beta) {
+
+ std::stringstream s;
+
+ s << "info depth " << Iteration
+ << " score " << value_to_uci(pv_score)
+ << (pv_score >= beta ? " lowerbound" : pv_score <= alpha ? " upperbound" : "")
+ << " time " << current_search_time()
+ << " nodes " << pos.nodes_searched()
+ << " nps " << nps(pos)
+ << " pv ";
+
+ for (Move* m = pv; *m != MOVE_NONE; m++)
+ s << *m << " ";
+
+ if (UseLogFile)
+ {
+ ValueType t = pv_score >= beta ? VALUE_TYPE_LOWER :
+ pv_score <= alpha ? VALUE_TYPE_UPPER : VALUE_TYPE_EXACT;
+
+ LogFile << pretty_pv(pos, current_search_time(), Iteration, pv_score, t, pv) << endl;
+ }
+ return s.str();
+ }
+