ABAP-日期加减函数

DATA:lv_date    TYPE p0001-begda,
     lv_days    TYPE t5a4a-dlydy,
     lv_months  TYPE t5a4a-dlymo,
     lv_signum  TYPE t5a4a-split,
     lv_years   TYPE t5a4a-dlyyr,
     lv_outdate TYPE p0001-begda.

lv_signum = '+' .
lv_date = '20221229' .

CALL FUNCTION 'RP_CALC_DATE_IN_INTERVAL'
  EXPORTING
    date      = lv_date
    days      = lv_days
    months    = lv_months
    signum    = lv_signum
    years     = lv_years
  IMPORTING
    calc_date = lv_outdate.