update

BitBoard.hpp

@@ -39,6 +39,9 @@ public:
     explicit constexpr operator bool() const {
         return mBoard != 0;
     }
+    explicit constexpr operator unsigned int() const {
+        return mBoard;
+    }
     explicit constexpr operator unsigned long() const {
         return mBoard;
     }
@@ -125,6 +128,7 @@ public:
     // WARN: Check for 0!
     unsigned lsb() const;
     unsigned pop();
+    constexpr int count() const;
 
 private:
     U64 mBoard = 0;
@@ -282,4 +286,9 @@ inline unsigned BitBoard::pop() {
     return i;
 }
 
+constexpr int BitBoard::count() const {
+    return __builtin_popcountll(mBoard);
+}
+
+
 #endif //CHESS_ENGINE_BITBOARD_HPP