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Managing Memory and Data Access
16.4 Using Alignment Directives, Qualifiers, and Flags
Example 16–4 Data Map for /NOALIGNMENT
Source Listing
Data Names in Declared Order
Line Level Name Location Size Bytes Usage Category
----- ----- -------- ------------- ---- ----- ------- --------
7 01 REC1 2 00000000 26 26 DISPLAY Group
8 02 FLD1 2 00000000 11 11 DISPLAY Group
9 03 FLD1-1 2 00000000 9 4 COMP N
10 03 FLD1-2 2 00000004 7 7 DISPLAY N
11 02 FLD2 2 0000000B 5 5 DISPLAY AN
12 02 FLD3 2 00000010 10 10 DISPLAY Group
13 03 FLD3-1 2 00000010 1 1 DISPLAY AN
14 03 FLD3-2 2 00000011 9 4 COMP N
15 03 FLD3-3 2 00000015 5 5 DISPLAY N
Byte Layout for Example 16–4:
|REC1 |
|FLD1 |FLD2 |FLD3 |
|FLD1-1 |FLD1-2 | |*|FLD3-2 |FLD3-3 |
|| | ||| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
1 5 12 17 22
18
Begin byte number (starting with 0)
Record length is 26 bytes.
Note
The asterisk (*) designates FLD3-1. Also, no padding or filler will result,
just as with Compaq COBOL for OpenVMS VAX on OpenVMS VAX.
Example 16–5 Data Map for /ALIGNMENT, -align
Source Listing
Data Names in Declared Order
Line Level Name Location Size Bytes Usage Category
----- ----- ------ ----------- ----- ---- ------ --------
7 01 REC1 2 00000000 29 29 DISPLAY Group
8 02 FLD1 2 00000000 11 11 DISPLAY Group
9 03 FLD1-1 2 00000000 9 4 COMP N
10 03 FLD1-2 2 00000004 7 7 DISPLAY N
11 02 FLD2 2 0000000B 5 5 DISPLAY AN
12 02 FLD3 2 00000010 13 13 DISPLAY Group
13 03 FLD3-1 2 00000010 1 1 DISPLAY AN
14 03 FLD3-2 2 00000014 9 4 COMP N
15 03 FLD3-3 2 00000018 5 5 DISPLAY N
Managing Memory and Data Access 16–11