Simplify semiopen_file (#2165)

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index dff84df3750e29ea5217000d6374109ad7fc1d0b..86f73563ef262a9e2914597320b0adfef8818e59 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -357,8 +357,8 @@ namespace {
                 score += RookOnPawn * popcount(pos.pieces(Them, PAWN) & PseudoAttacks[ROOK][s]);
 
             // Bonus for rook on an open or semi-open file
                 score += RookOnPawn * popcount(pos.pieces(Them, PAWN) & PseudoAttacks[ROOK][s]);
 
             // Bonus for rook on an open or semi-open file

-            if (pos.is_semiopen_file(Us, file_of(s)))
-                score += RookOnFile[bool(pos.is_semiopen_file(Them, file_of(s)))];
+            if (pos.is_on_semiopen_file(Us, s))
+                score += RookOnFile[bool(pos.is_on_semiopen_file(Them, s))];

 
             // Penalty when trapped by the king, even more if the king cannot castle
             else if (mob <= 3)
 
             // Penalty when trapped by the king, even more if the king cannot castle
             else if (mob <= 3)