Small clean-ups

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 0fb9abdf2404ff3a6edc775238c885e1b129f604..403d59dd70d0cc0deb1b5f6f69433ff784a9ba44 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -114,6 +114,30 @@ namespace Eval {
         }
   }
 
+  /// NNUE::export_net() exports the currently loaded network to a file
+  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;
+  }
+
   /// NNUE::verify() verifies that the last net used was loaded successfully
   void NNUE::verify() {
 
@@ -907,7 +931,7 @@ namespace {
     Color strongSide = eg > VALUE_DRAW ? WHITE : BLACK;
     int sf = me->scale_factor(pos, strongSide);
 
-    // If scale factor is not already specific, scale down via general heuristics
+    // If scale factor is not already specific, scale up/down via general heuristics
     if (sf == SCALE_FACTOR_NORMAL)
     {
         if (pos.opposite_bishops())
@@ -1117,7 +1141,7 @@ Value Eval::evaluate(const Position& pos) {
       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.