From: Ondrej Mosnacek <omosnacek@gmail.com>
Date: Sun, 6 Oct 2019 07:57:20 +0000 (+0200)
Subject: Make priorCapture a bool
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=c78f8ddd868966b43b20ae4ef585b6cf1f7ab595

Make priorCapture a bool

It is always used as a bool, so let's make it a bool straight away.
We can always redefine it as a Piece in a later patch if we want
to use the piece type or the piece color.

No functional change.
---

diff --git a/src/search.cpp b/src/search.cpp
index 156f6d1c..6cf99938 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -594,9 +594,9 @@ namespace {
     Move ttMove, move, excludedMove, bestMove;
     Depth extension, newDepth;
     Value bestValue, value, ttValue, eval, maxValue;
-    bool ttHit, ttPv, inCheck, givesCheck, improving, doLMR;
+    bool ttHit, ttPv, inCheck, givesCheck, improving, doLMR, priorCapture;
     bool captureOrPromotion, doFullDepthSearch, moveCountPruning, ttCapture;
-    Piece movedPiece, priorCapture;
+    Piece movedPiece;
     int moveCount, captureCount, quietCount, singularLMR;
 
     // Step 1. Initialize node
@@ -867,7 +867,7 @@ namespace {
                 probCutCount++;
 
                 ss->currentMove = move;
-                ss->continuationHistory = &thisThread->continuationHistory[!!priorCapture][pos.moved_piece(move)][to_sq(move)];
+                ss->continuationHistory = &thisThread->continuationHistory[priorCapture][pos.moved_piece(move)][to_sq(move)];
 
                 assert(depth >= 5);
 
@@ -1068,7 +1068,7 @@ moves_loop: // When in check, search starts from here
 
       // Update the current move (this must be done after singular extension search)
       ss->currentMove = move;
-      ss->continuationHistory = &thisThread->continuationHistory[!!priorCapture][movedPiece][to_sq(move)];
+      ss->continuationHistory = &thisThread->continuationHistory[priorCapture][movedPiece][to_sq(move)];
 
       // Step 15. Make the move
       pos.do_move(move, st, givesCheck);
@@ -1323,8 +1323,7 @@ moves_loop: // When in check, search starts from here
     Move ttMove, move, bestMove;
     Depth ttDepth;
     Value bestValue, value, ttValue, futilityValue, futilityBase, oldAlpha;
-    Piece priorCapture;
-    bool ttHit, pvHit, inCheck, givesCheck, evasionPrunable;
+    bool ttHit, pvHit, inCheck, givesCheck, evasionPrunable, priorCapture;
     int moveCount;
 
     if (PvNode)
@@ -1476,7 +1475,7 @@ moves_loop: // When in check, search starts from here
       }
 
       ss->currentMove = move;
-      ss->continuationHistory = &thisThread->continuationHistory[!!priorCapture][pos.moved_piece(move)][to_sq(move)];
+      ss->continuationHistory = &thisThread->continuationHistory[priorCapture][pos.moved_piece(move)][to_sq(move)];
 
       // Make and search the move
       pos.do_move(move, st, givesCheck);