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From: gwalker@BBN-SPCA.ARPA (Gail Rubin Walker)
Newsgroups: mod.computers.vax
Subject: date/time arithmetic in vms
Message-ID: <8607011039.AA25666@ucbvax.Berkeley.EDU>
Date: Tue, 1-Jul-86 00:18:47 EDT
Article-I.D.: ucbvax.8607011039.AA25666
Posted: Tue Jul  1 00:18:47 1986
Date-Received: Tue, 1-Jul-86 19:39:14 EDT
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Organization: The ARPA Internet
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Approved: info-vax@sri-kl.arpa

If I want to compute a date (VAX quadword date form) that is 1 month from today
- what is the best way? It seems to me that there is a system service
'missing'. I can get the current date/time in a 7-word array with sys$numtim.
One of the words is month number.  I can add 1 to that (and do the appropriate
things if I've gone off the end of the year) but then what?  There doesn't
appear to be a service that converts from the 7 word array back to the vax
quadword format. Or even from the 7 word array to an ascii string. The other
system services that deal with quadword times convert from quadword to ascii
string and back - that doesn't help.  Do I really have to then myself turn the
7 word array into an ascii string to use sys$bintim to get back to the quadword
form? Or have I just overlooked a system routine somewhere?

-- Gail Walker
gwalker@bbn-spca