+ void NNUE::export_net(const std::optional<std::string>& filename) {
+ std::string actualFilename;
+ if (filename.has_value()) {
+ actualFilename = filename.value();
+ } else {
+ if (eval_file_loaded != EvalFileDefaultName) {
+ sync_cout << "Failed to export a net. A non-embedded net can only be saved if the filename is specified." << sync_endl;
+ return;
+ }
+ actualFilename = EvalFileDefaultName;
+ }
+
+ ofstream stream(actualFilename, std::ios_base::binary);
+ if (save_eval(stream)) {
+ sync_cout << "Network saved successfully to " << actualFilename << "." << sync_endl;
+ } else {
+ sync_cout << "Failed to export a net." << sync_endl;
+ }
+ }
+