title: Difference between 2 timestamps
body: <p>I have a program in ABAP where they use the type 'timestampl' in a variable, so they can get the time of certain events. They use it because they need the milliseconds.</p>
  
  <p>I now have the mission of getting the difference between 2 of these variables, and I can't seem to find a function module or another solution.</p>
  
  <p>Any help is much appreciated!</p>