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#ifdef USE_BSFQ

#  if defined(_MSC_VER) && !defined(__INTEL_COMPILER)

FORCE_INLINE Square lsb(Bitboard b) {
  unsigned long idx;
  _BitScanForward64(&idx, b);
  return (Square) idx;
}

FORCE_INLINE Square msb(Bitboard b) {
  unsigned long idx;
  _BitScanReverse64(&idx, b);
  return (Square) idx;
}
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#  if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
#ifdef _WIN64
FORCE_INLINE Square lsb(Bitboard b) {
  unsigned long idx;
  _BitScanForward64(&idx, b);
  return (Square) idx;
}

FORCE_INLINE Square msb(Bitboard b) {
  unsigned long idx;
  _BitScanReverse64(&idx, b);
  return (Square) idx;
}
#else
FORCE_INLINE Square lsb(Bitboard b) {
	unsigned long idx;
	if (unsigned (b))
	{
		_BitScanForward(&idx, b);
		return Square (idx);
	} else
	{
		_BitScanForward(&idx, (b >> 32));
		return Square(idx + 32);
	}
  /*unsigned long idx;
  _BitScanForward64(&idx, b);
  return (Square) idx;*/
}

FORCE_INLINE Square msb(Bitboard b) {
	unsigned long idx, b32 = (b >> 32);
	if (b32)
	{
		_BitScanReverse(&idx, b32);
		return Square(idx + 32);
	} else
	{
		_BitScanReverse(&idx, unsigned (b));
		return Square(idx);
	}
  /*unsigned long idx;
  _BitScanReverse64(&idx, b);
  return (Square) idx;*/
}
#endif

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#elif defined(_MSC_VER) && defined(__INTEL_COMPILER) // Almost never true

  return _mm_popcnt_u64(b);

#elif defined(_MSC_VER)
	unsigned lo = b, hi = (b >> 32);
	return _mm_popcnt_u32(lo) + _mm_popcnt_u32(hi);
  //return (int) __popcnt64(b);

#else
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#elif defined(_MSC_VER)
#ifdef _WIN64
  return _mm_popcnt_u64(b);
#else
	unsigned lo = b, hi = (b >> 32);
	return _mm_popcnt_u32(lo) + _mm_popcnt_u32(hi);
#endif
#else
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