title: Count leading zeros between the decimal point and first nonzero digit
body: <p>Suppose if we have a number 1.000633, I want to count number of zeros after the decimal point until first nonzero digit in the fraction, the answer should be 3. For 0.002 the answer should be 2.</p>
  
  <p>There is no such function in R that could help. I have explored at Ndec function in package DescTools but it does not do the job.</p>