Optimisation of Position::see and Position::see_sign

[stockfish] / src / movepick.cpp

diff --git a/src/movepick.cpp b/src/movepick.cpp
index 1ec56c2f700a7c2a30bedd371af100fc6a29e9ec..95e60003f00b6eafc9d5f5592e0cdd22c64bedef 100644 (file)
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -115,7 +115,7 @@ MovePicker::MovePicker(const Position& p, Move ttm, Value th)
   ttMove =   ttm
           && pos.pseudo_legal(ttm)
           && pos.capture(ttm)
-          && pos.see(ttm) > threshold ? ttm : MOVE_NONE;
+          && pos.see_ge(ttm, threshold + 1)? ttm : MOVE_NONE;
 
   stage += (ttMove == MOVE_NONE);
 }
@@ -201,7 +201,7 @@ Move MovePicker::next_move() {
           move = pick_best(cur++, endMoves);
           if (move != ttMove)
           {
-              if (pos.see_sign(move) >= VALUE_ZERO)
+              if (pos.see_ge(move, VALUE_ZERO))
                   return move;
 
               // Losing capture, move it to the beginning of the array
@@ -295,7 +295,7 @@ Move MovePicker::next_move() {
       {
           move = pick_best(cur++, endMoves);
           if (   move != ttMove
-              && pos.see(move) > threshold)
+              && pos.see_ge(move, threshold + 1))
               return move;
       }
       break;