floor

var MaxInt64digits = numOfDigits(math.MaxInt64) // 19

var MaxUint64digits = numOfDigits(math.MaxUint64) // 20

var ScaleTable = [...]uint64{
	1,
	10,
	100,
	1000,
	10000,
	100000,
	1000000,
	10000000,
	100000000,
	1000000000,
	10000000000,
	100000000000,
	1000000000000,
	10000000000000,
	100000000000000,
	1000000000000000,
	10000000000000000,
	100000000000000000,
	1000000000000000000,
	10000000000000000000,
}