Hi, I have a variable measuring speed. The values are double and vary in the number of decimal points. I would like to create a new variable that will count the number of decimals in the speed variable. Please, how can this be done?

Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input double speed
 1.55
  1.2
    2
1.433
2.123
 1.43
1.158
end