HP 3000 Manuals HP 3000 Manuals
ADJUSTUSLF 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)