Differences In Extensions And Other Features - Compaq COBOL AAQ2G1FTK User Manual

Compaq COBOL for OpenVMS VAX and Compaq COBOL Compatibility and Migration
Table B–1 (Cont.) Cross-Platform Compatibility of COBOL Features
VAX compatible alignment
Alpha natural alignment / padding
Targetted code generation / optimization
/[NO]SEPARATE_COMPILATION
I18N (PIC N, etc.)
CALL USING BY DESCRIPTOR
cobfunc, cobcall, and cobcancel
Reformat
Terminal source format
Lowercase, -/_ in source
Sample Application - Client/Server
Sample Applications - Visual Basic calling
COBOL
Oracle CDD/DML support
Transarc Encina (-tps) support
DECset PCA,LSE/SCA support
DECset PDF support
FUSE support
Interactive compiler driver
Symbolic debugger support
B.2 Differences in Extensions and Other Features
Compaq COBOL contains the following language extensions and other features
that are not in Compaq COBOL for OpenVMS VAX:
•
•
•
•
•
Compaq COBOL for OpenVMS VAX and Compaq COBOL Compatibility and Migration B–3
A choice of alignment (with the /ALIGNMENT qualifier) on the compile
command line or as a source directive for individual records; you can select
Alpha data alignment to optimize performance or Compaq COBOL for
OpenVMS VAX data alignment for compatibility with Compaq COBOL for
OpenVMS VAX.
A flag or qualifier (/ARCHITECTURE or
through targeted code generation.
A flag or qualifier (/ARITHMETIC or
standard arithmetic.
A flag or qualifier (/CONVERT=LEADING_BLANKS or
) that changes all blanks to zeros in numeric display
leading_blanks
items in arithmetic expressions or statements.
A flag or qualifier (/DISPLAY_FORMATTED or
causes the proper display of numeric values without the use of WITH
CONVERSION on the DISPLAY statement.
B.1 Compatibility Matrix
OpenVMS OpenVMS Tru64
VAX Alpha UNIX
p p p
p p
N
p p p
p
P N
p p p
p p
N
p p
N
p p p
p p p
p p p
N N N
N N N
p p
N
p
N N
p p
N
p
N N
p
N N
N N N
p p p
-arch ) that enhances performance
) that selects native or
-arithmetic
-convert
-display_formatted
Windows NT
Alpha
p
p
p
N
p
N
p
p
p
p
p
p
N
N
N
N
N
p
p
) that