title: TCL integer comparison
body: <p>I wan to know how to confirm that two integers in tcl are close to each other?
  In other words if the value difference between the two numbers is less or equal to 5, result is pass else FAIL.</p>
  
  <p>can somebody tell me how to write it in tcl? or suggest me which operator i can use to achieve this.</p>
  
  <p>Thanks,
  Kallesh</p>