 |
» |
|
|
|
NM and CM callable. Adjusts directory space in a USL file by moving the start of the
information block forward (or backward) on a user subprogram library
(USL) file, thereby increasing (or decreasing) the space
available for the file directory block. The overall length of
the file does not change. This intrinsic is intended for
programmers writing compilers. | | | |  | NOTE:
A USL contains CM object code and is meaningful only in the CM
program development process. | | | | |
Syntax | |
I16 I16V I16V
uslferror:=ADJUSTUSLF(uslfnum,adjustment);
|
Functional Return | |
- uslferror
16-bit signed integer (assigned functional return) Returns the error number if an error occurs (condition code returns CCL (1)).
If no error occurs, no value is returned. The error number
returned corresponds to the following:
| Value | Meaning |
|---|
| 0 | The file specified by uslfnum was empty, an unexpected end-of-file was encountered while reading
the uslfnum, or an unexpected end-of-file was encountered while writing the uslfnum. | | 1 | Unexpected I/O error occurred. | | 4 | Request exceeds the maximum file directory size (32,768 half words). | | 5 | Insufficient directory space. | | 6 | Insufficient USL file information block space. |
Parameters | |
- uslfnum
16-bit signed integer by value (required) Passes the file number of the USL file (returned by FOPEN/HPFOPEN).
- increment
16-bit signed integer by value (required) Returns the assigned record count:
If a positive value, the information block is moved toward the
end-of-file in the USL file, increasing the directory block and
decreasing the information block. If a negative value, the information block is moved toward the start
of the USL file, decreasing the directory block and increasing the
information block.
Condition Codes | |
- CCE (2)
Request granted. - CCG (0)
Not returned. - CCL (1)
Request denied. An error number was returned
to uslferror indicating the reason for this failure.
Related Information | |
- Intrinsics
CLEANUSL, EXPANDUSLF, INITUSLF - Commands
None - Manuals
MPE Segmenter Reference Manual (30000-90011)
|
