Difference between 2 timestamps

Question

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.

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.

Any help is much appreciated!

Answer 1

Use the method CL_ABAP_TSTMP=>SUBTRACT, by passing two timestamps which must be of the type TIMESTAMPL so that to contain milliseconds, and the difference between the 2 timestamps will be returned in number of seconds, including the milliseconds.

Example:

DATA: lv_tstmp1 TYPE timestampl,
      lv_tstmp2 TYPE timestampl,
      lv_diff   TYPE tzntstmpl.

lv_tstmp1 = '20190704000010.999'. " July 4th, 00:00:10 and 999 ms
lv_tstmp2 = '20190703235950.001'. " July 3rd, 23:59:50 and 001 ms

CALL METHOD cl_abap_tstmp=>subtract
    EXPORTING
      tstmp1 = lv_tstmp1
      tstmp2 = lv_tstmp2
    RECEIVING
      r_secs = lv_diff.

ASSERT lv_diff = '20.998'. " expectation verified or run time error