Calc Object Function _pbcount() - ancillary function to ddlRelaterEx() PRESENT BY WITH COUNT
 
   Format:
     _pbcount(0)
 
   Result:
      The result of this function is a 64-bit floating number that represents
      the count of instances of the current breakpoin.
 
   Notes:
      The instigating ddlRelateEx() must include the PRESENT BY WITH COUNT
      Clause; and it must include the PRESENT BY columns in a VALUE Clause.
 
   Example:
      For schema:
         TABLE1
            String1
               1) ABCDE1
               2) ABCDE1
               3) ABCDE2
               4) ABCDE2
               5) ABCDE2
               6) ABCDE3
               7) ABCDE3
               8) ABCDE3
               9) ABCDE3
              10) ABCDE4
              11) ABCDE5
              12) ABCDE5
         TABLE2
            String1
               1) ABCDE1
               2) ABCDE2
               3) ABCDE3
               4) ABCDE4
               5) ABCDE5
 
      TQL Procedure:
         fill/x a Table1
         fill/x a Table2
          
         relatex a  -
            PRESENT BY WITH COUNT Table2.string1  -
            VALUE Table2.string1 -
            / Table1 / INNER / Table2 / Table1.String1 = Table2.String1
          
         createcalcobject/dx CO1 A NULL "return // -
            calc pbcount = _pbcount(0) // -
            print Table2.String1 pbcount (+5) //
          
         getcalc/px a NULL CO1
 
      TQL Result:
         ABCDE1   2
         ABCDE1   2
         ABCDE2   3
         ABCDE2   3
         ABCDE2   3
         ABCDE3   4
         ABCDE3   4
         ABCDE3   4
         ABCDE3   4
         ABCDE4   1
         ABCDE5   2
         ABCDE5   2