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Subroutine: ERROR

Purpose: User error handling routine.

Category: SYSTEM, USER-INTERFACE

File: srvreq.c

Author: J.P. Terlouw

Use: CALL ERROR( IER, Input integer
MESSAGE ) Input character

IER Severity of error. 1 = Warning
2 = Minor error
3 = Serious error
4 = Fatal error
MESSAGE Character string containing message for the
user.

Description: The user is allowed to set the value of the MESSAGELEVEL
and the ERRORLEVEL. The action taken depends on the
severity of the error in relation to these levels.
If IER >= ERRORLEVEL then the error is fatal and the
task is aborted.
If IER >= MESSAGELEVEL then the message is given to the
user.
Default levels: ERRORLEVEL=4, MESSAGELEVEL=1.

Examples: With default levels IER=1,2,3 gives message but no abort.
IER=4 gives message and aborts task
By setting MESSAGELEVEL=2 The user or applications
programer could suppress the error messages for IER=1
conditions

Updates: 1978: original document
Feb 15, 1990: JPT, Portable version, rewritten in ANSI C.