/// lsb()/msb() finds the least/most significant bit in a nonzero bitboard.
/// pop_lsb() finds and clears the least significant bit in a nonzero bitboard.
-#if !defined(USE_BSFQ)
+#ifndef USE_BSFQ
Square lsb(Bitboard b) { return BSFTable[bsf_index(b)]; }
return (Square)(result + MS1BTable[b32]);
}
-#endif // !defined(USE_BSFQ)
+#endif // ifndef USE_BSFQ
/// Bitboards::print() prints a bitboard in an easily readable format to the