FORTRAN Reference Manual

FORTRAN Reference Manual—528615-001
15-1
15 Utility Routines
The FORTRAN run-time library contains utility routines supplied by HP. These routines
enable FORTRAN applications to:
•
Invoke system routines that are not available through standard FORTRAN
constructs.
•
Fetch, alter, or delete the contents of PARAM, ASSIGN, and startup messages.
The latter routines comprise the Saved Message Utility (SMU).
Topics covered in this section include:
System-Related Routines
Table 15-1 lists routines that you can use to access various system-level functions.
Each routine is designed to be used either in modules in which you specify ENV OLD
or in modules in which you specify ENV COMMON but never both. For information
about the ENV directive, see Section 10, Compiler Directives.
Topic Page
System-Related Routines
15-1
Saved Message Utility 15-21
Using SMU Routines 15-23
Types of SMU Routines 15-24
Saved Messages 15-26
Checkpoint Considerations for Saved Message Utility Routines 15-28
Table 15-1. FORTRAN Run-Time Utility Routines (page 1 of 2)
Routine ENV Action
FORTRANCOMPLETION OLD Enables a FORTRAN program to specify
completion codes and related information
when it terminates.
FORTRAN_COMPLETION_ COMMON Enables a FORTRAN program to specify
completion codes and related information
when it terminates.
FORTRAN_CONTROL_ COMMON Calls the CONTROL system procedure unless
buffered spooling has been successfully
initiated for the file, in which case
FORTRAN_CONTROL_ calls the
SPOOLCONTROL spooler procedure.