Use a Direction enum for Square deltas

[stockfish] / src / bitbase.cpp

diff --git a/src/bitbase.cpp b/src/bitbase.cpp
index d206210414846e3c3392ac655318080397c8b4a4..1c4217b0e3b929ae22258fe20c9f71c1638260e8 100644 (file)
--- a/src/bitbase.cpp
+++ b/src/bitbase.cpp
@@ -111,7 +111,7 @@ namespace {
     ksq[WHITE] = Square((idx >>  0) & 0x3F);
     ksq[BLACK] = Square((idx >>  6) & 0x3F);
     us         = Color ((idx >> 12) & 0x01);
-    psq        = make_square(File((idx >> 13) & 0x3), RANK_7 - Rank((idx >> 15) & 0x7));
+    psq        = make_square(File((idx >> 13) & 0x3), Rank(RANK_7 - ((idx >> 15) & 0x7)));
 
     // Check if two pieces are on the same square or if a king can be captured
     if (   distance(ksq[WHITE], ksq[BLACK]) <= 1