Field help (APSPERPRG)

When wanting to establish aggregates with a periodicity not predefined in the software, there is the possibility to define the name of a process here where the following sub-programs should be defined :

• # This sub-program is used to recalculate a date (defined by DAT1)
  # which should correspond to the end of the period.
  # The result is DAT2.
  # LIBCLE corresponds to the label for the period in alphanumeric format.
  Subprog BORNES(DAT1,DAT2,LIBCLE)
  Value    Date    DAT1
  Variable Date    DAT2
  Variable Char    LIBCLE
• # This sub-program is used to identify a date (defined par DA1) that will correspond to the start of the period.
  Subprog CADRE(DAT1)
  Variable Date DAT1
• # This sub-program returns in DAT2 the end of the period defined by DAT1
  Subprog DATFIN(DAT1,DAT2)
  Value Date DAT1
  Variable Date DAT2
• # This sub-program returns the number of periods (signed) separating the two dates
  Subprog DECAL(DAT1,DAT2,DECAL)
  Value Date DAT1
  Value Date DAT2
  Variable Integer DECAL
• # This sub-program adds a number of periods (signed) to an end date
  Subprog RECAL(DAT1,DAT2,DECAL)
  Value Date DAT1
  Variable Date DAT2
  Value Integer DECAL

An example of such sub-program can be consulted by looking at the SUBSTADEC process, which defines the sub-program corresponding to management by decade.