inline unsigned int trailingZeros32(unsigned int value) {

#if defined(_MSC_VER)

#if (_MSC_VER < 1700)

unsigned long index = 0;

_BitScanForward(&index, value);

return (unsigned int)index;

#else

return _tzcnt_u32(value);

#endif

#elif defined(__GNUC__) || defined(__GNUG__)

return __builtin_ctz(value);

#elif defined(__ICC) || defined(__INTEL_COMPILER)

return _bit_scan_forward(value);

#elif defined(__clang__)

return llvm.cttz.i32(value, true);

#else

static const int MultiplyDeBruijnBitPosition[32] = {

0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,

31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9 };

return MultiplyDeBruijnBitPosition[((uint32_t)((value & -value) * 0x077CB531U)) >> 27];

#endif

}