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Comparision, Absolute, and Delta Times?

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The Question is:

How do I convert a selected date (not current) from comparison format to delta

The Answer is :

  Comparision format is effectively a specific type of an absolute
  time, and is not a format that particularly lends itself to a
  simple conversion back into an absolute time format nor into a
  delta time format.
  Effectively, you will have to convert the comparision format back
  to absolute format through manual means, and from there you can
  convert an absolute time and the current time to binary, and then
  subtract the larger from the smaller value to get the delta time.
  The OpenVMS Wizard encourages you to learn about the OpenVMS time
  formats, as well as the available DCL lexical functions and the
  available system services and run-time library calls.  A chapter
  on time is available in the V7.3 system manager's manual, and
  various time-related operations are in the programming concepts
  Some related topics include (3982), (4025), (4982), (5313), (6046),
  (6069), (6095), this (6790), and (9713), among others.

answer written or last revised on ( 18-JUN-2004 )

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