End time must be same or later than start time.
Both time arguments must be absolute times, enclosed in "" string quotes, if they contain a blank.
When upgrading to VMS 7.3-2 or later, the call can be replaced by something like symbol=f$delta_time(start,end[,"dcl"])
Fortran source for 64 bit CPUs
Fortran preprocessor source, to generate source for e.g. VAX
Build command-file
description file for MMS
Command-definition source
DCL command definition file
To make the command available to DCL, either
$ set command delta_time , or
$ delta*_time :== $location:f$delta_time ,or
put f$delta_time.exe into DCL$PATH, and use command f$delta_time.
(the build and cld file uses explicit locations, please modify.)