fpt: Padding of COMMON blocks

fpt and WinFPT Reference Manual - Command-line Commands

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PAD COMMON BLOCKS

Syntax:

[DO NOT] PAD COMMON BLOCKS
[DO NOT] PAD COMMONS

Function:

New variable declarations are inserted into COMMON blocks so as to force variables within the COMMON blocks to aligned addresses.

The command ALIGN OBJECTS IN COMMON BLOCKS instructs fpt to compute COMMON block addresses with the requirement that they are aligned, but does not change the code. Both ALIGN OBJECTS IN COMMON BLOCKS and PAD COMMON BLOCKS must be specified if padding variables are to be inserted

The command COMMON ALIGNMENT GRANULARITY specifies the unit of alignment for COMMON blocks. Logical, integer and real objects are aligned to the COMMON alignment granularity or to their data size, whichever is the smaller. Complex objects are aligned with the alignment rules for the real data specification with he same precision. Character objects are not aligned.

No change is made in the alignment of objects where EQUIVALENCE relations would be affected by the change in address.

Where to Use this Command

Operating system command line	Yes
Configuration file, config.fsp	Yes
Specification (fsp) files, *.fsp	Yes
Interactively, to FPT> prompt	No
Interactive command files	No
Embedded in the Fortran code	No

Default

No change is made by default. (Note that defaults may be changed in the configuration file).