How to find the number of days between two date in SAP ABAP using Function Module

Following are the codes to find the number of days between two date in SAP ABAP using Function Module
*&---------------------------------------------------------------------*
*& Report  ZTESTR_5
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*

REPORT  ztestr_5.

DATA : lv_days TYPE p.

PARAMETERS : p_date1 TYPE sy-datum,
             p_date2 TYPE sy-datum.

CALL FUNCTION '/SDF/CMO_DATETIME_DIFFERENCE'
 EXPORTING
   DATE1                  = p_date1
*   TIME1                  =
   DATE2                  = p_date2
*   TIME2                  =
 IMPORTING
   DATEDIFF               = lv_days
*   TIMEDIFF               =
*   EARLIEST               =
 EXCEPTIONS
   INVALID_DATETIME       = 1
   OTHERS                 = 2
          .
IF sy-subrc <> 0.
* Implement suitable error handling here
ENDIF.


WRITE : / lv_days.

Similarly , you can also find the time difference by populating the time1 and time2 parameter.
Thanku , please do share and comment.