Component Definition Area

All unused or reserved areas must be initialized to binary zeros.

Offset Type Description
0 pic x comp-x
  • bit 7 (x"80") indicates duplicates to be returned in order
  • bit 6 (x"40") indicates DESCENDING key component
This byte is valid only if you compiled the program used to create the file with IXNUMKEY.
1 pic x comp-x bit 7 (x"80") indicates that the field is NUMERIC
    If bit 7 is set (numeric):
  • bit 6 (x"40") indicates that the field is SIGNED NUMERIC
  • bit 6 (x"40") indicates that the field is SIGNED NUMERIC
  • bit 5 (x"20") indicates that the field is a non-display field.
If bit 7 is set and 5 is set (non-DISPLAY field), bits 0 and 1 are used as follows:
  • 0 - indicates that the field is BINARY
  • 1 - indicates that the field is PACKED-DECIMAL
  • 2 - indicates that the field is COMP-X format
  • 3 - indicates that the field is COMP-5 format
  • bit 2 (value x"04") indicates floating point
If bit 7 is set and bit 5 is not set, (DISPLAY field) but bit 6 is set (SIGNED), bits 0 and 1 are used as follows:
  • 0 - indicates SIGN TRAILING INCLUDED
  • 1 - indicates SIGN TRAILING SEPARATE
  • 2 - indicates SIGN LEADING INCLUDED
  • 3 - indicates SIGN LEADING SEPARATE
If bit 7 is not set (non-numeric):
  • Bit 1 is set if the collating sequence specified in the FCD is to be applied to this field.
2 pic xxxx comp-x Offset of component in the record (starting at 0).
6 pic xxxx comp-x Length of the component (in bytes).