1 files changed, 2 insertions, 0 deletions
diff --git a/src/board.h b/src/board.h
index c9d8153..11b0c71 100644
--- a/src/board.h
+++ b/src/board.h
@@ -11,6 +11,7 @@
 #define KING   0b1010
 
 typedef U64 Bitboard;
+#define BIT (U64)1
 
 typedef struct {
   Bitboard pieces[12];
@@ -56,6 +57,7 @@ static const char* pieces[] = {
 };
 
 void precompute_knight_attack_table();
+void precompute_king_attack_table();
 void print_bitboard(Bitboard bb);
 int pop_count(Bitboard bb);
 void print_board(Board board);