The UESL Universal External Subroutine Library (UESL) comprises a group of subroutines
which are an integral part of the DIBOL-83 language and are generally available on all
DIBOL-83 implementations. Most of these are available as built-in-functions (see
FUNCTIONS).
ASCII (zie %CHAR)
ASCII returns the ASCII character for a numeric character code.
XCALL ASCII (nfield, afield)
DATE (zie %DATE)
DATE returns the current system date in dd-mmm-yy format.
XCALL DATE (afield)
DECML (zie %DECML)
DECML returns the numeric character code for an ASCII character.
XCALL DECML (afield, nfield)
DELET
DELET removes one or more versions of a file from a directory.
XCALL DELET ({ch,} filespec)
ERROR (zie %ERLINE, %ERROR en %SYSERR)
ERROR returns the error number and the line number at which the last
trappable error occurred.
XCALL ERROR (errnum, line, syserr)
Note - syserr is a VAX DIBOL extension which returns the number of
the system or RMS error associated with the last trappable error.
FATAL
FATAL specifies the action to be taken when a non-trappable error is
detected by the run-time system. When you do not use FATAL the default
program to be executed is set by using the logical DBL$FATAL_IMAGE.
XCALL FATAL (action{,filespec})
Acceptable action values are:
0 Return to system level on untrapped error.
1 Use the default user-designated program on an untrapped
error. If there is no default user-designated program,
return to the system level.
2 Use the user-designated program specified by the
filespec on the untrapped error. This filespec
designation remains in effect while the current program
is running.
3 Return, in the filespec field, the name of the default
user-designated program. If none is defined, return
spaces.
Lay-out of the message sent if an untrapped error occurs:
ERR1, D3
ERR2, D3
ERLN, D10
MODUL, A31
PRGNM, A31
FILEC
FILEC creates a file.
XCALL FILEC (file, fdl)
FLAGS
FLAGS alters operating parameters of the run-time system.
XCALL FLAGS (parameters{,action})
FLAGS Option Fields
------------------------------
| 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
------------------------------
10 Suppress Terminator Echo
9 Explicit Terminator not required
8 Ignore Interrupt Sequences
7 Suppress STOP Message
6 Not used
5 Suppress Character Echo
4 RUBOUT for Video Displays
3 File Protection
2 Upper/Lower Case Character
1 Data Formatting. Instead you may set the logicals SYS$DIGIT_SEP to
a '.' and SYS$RADIX_PT to a ','.
Acceptable action codes for FLAGS are:
none all non-zero flags are enabled, all zero flags are
disabled.
0 all non-zero flags are disabled, all zero flags are
unchanged.
1 all non-zero flags are enabled, all zero flags are
unchanged.
2 current flags are returned to the first argument.
INSTR (zie %INSTR)
INSTR searches a string of data for another string. String 1 is the
string to be searched, and string 2 is the string to be searched for.
XCALL INSTR (start,string1,string2,position)
JBNO (zie %JBNO)
JBNO returns the job number.
XCALL JBNO (nfield)
MONEY
MONEY specifies a currency symbol as either the dollar symbol ($) or
some other symbol. You can also set the logical SYS$CURRENCY.
XCALL MONEY (afield)
PAK (kan nu dmv A = B)
PAK converts zoned decimal fields to packed decimal.
XCALL PAK (record,size,dfield{,...})
RENAM
RENAM changes the name of an existing file.
XCALL RENAM ({ch,}newfile, oldfile)
RSTAT (zie %RSIZE en %RTERM)
RSTAT returns the size and terminating character for the last record
read by a READ or READS statement.
XCALL RSTAT (size{,char})
RUNJB
RUNJB starts another program without terminating the current program.
XCALL RUNJB (filespec, terminal)
SIZE (zie %SIZE)
SIZE returns the size of a field.
XCALL SIZE (field,size)
TIME (zie %TIME)
TIME returns the current system time of day in hhmmss format.
XCALL TIME (dfield)
TNMBR (zie %TNMBR)
TNMBR returns the number of the terminal to which the program is
attached.
XCALL TNMBR (nfield)
The numeric field should be 10 digits long.
TTSTS (zie %TTSTS)
TTSTS returns an indication of waiting terminal input. If no
characters are waiting, a zero is returned; otherwise the number of
characters waiting is returned.
XCALL TTSTS (nfield{,ch})
UNPAK (kan nu dmv B = A)
UNPAK converts packed decimal fields to zoned decimal.
XCALL UNPAK (record,dfield{,...})
VERSN (zie %VERSN)
VERSN returns the DIBOL version number. The format of the version
string is vvvvvvvsssstmm.nnpp where:
vvvvvvv is the operating system.
ssss is the operating system subsystem.
t is the release status.
mm is the major version number.
nn is the minor version number.
pp is the patch level.
XCALL VERSN (afield)
WAIT (zie %WAIT) (zie ook (S)SEND en (S)RECV))
WAIT suspends program execution pending the occurrence of an event.
XCALL WAIT ({seconds},parameters{,event})
WAIT Option Fields
------------
| 4 | 3 | 2 | 1 |
------------
1 Wait for specified time to expire.
2 Wait for terminal input at any one of the terminals
opened by the program.
3 Wait for a terminator to be typed at any one of the
terminals opened by the program.
4 Wait for a message.
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