// Note that this does not work in Microsoft Visual Studio.
#if !defined(_MSC_VER) && !defined(NNUE_EMBEDDING_OFF)
INCBIN(EmbeddedNNUE, EvalFileDefaultName);
- constexpr bool gHasEmbeddedNet = true;
#else
- constexpr bool gHasEmbeddedNet = false;
const unsigned char gEmbeddedNNUEData[1] = {0x0};
const unsigned char *const gEmbeddedNNUEEnd = &gEmbeddedNNUEData[1];
const unsigned int gEmbeddedNNUESize = 1;
}
}
- void NNUE::export_net() {
- if constexpr (gHasEmbeddedNet) {
- ofstream stream(EvalFileDefaultName, std::ios_base::binary);
- stream.write(reinterpret_cast<const char*>(gEmbeddedNNUEData), gEmbeddedNNUESize);
+ void NNUE::export_net(const std::optional<std::string>& filename) {
+ std::string actualFilename;
+ if (filename.has_value()) {
+ actualFilename = filename.value();
} else {
- sync_cout << "No embedded network file." << sync_endl;
+ 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;
}
}
bool lowPieceEndgame = pos.non_pawn_material() == BishopValueMg
|| (pos.non_pawn_material() < 2 * RookValueMg && pos.count<PAWN>() < 2);
- v = classical || lowPieceEndgame ? Evaluation<NO_TRACE>(pos).value()
+ v = classical || lowPieceEndgame ? Evaluation<NO_TRACE>(pos).value()
: adjusted_NNUE();
// If the classical eval is small and imbalance large, use NNUE nevertheless.