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function  

ymdhms-day-difference

 
 

Library: Date and time functions (OMDATE)
Include: omdate.xin
Return type: Integer

Returns: Returns the number of days difference between two given dates.


Declaration

define integer function ymdhms-day-difference
              (value string a, value string b)

Argument definitions

a
the first date in "YYYYMMDDhhmmss+ZHZM" format
b
the second date, also in "YYYYMMDDhhmmss+ZHZM" format


Purpose

This function takes two dates and returns a signed value representing the number of days difference between them. The result is rounded down to the largest number of days less than or equal to the difference. The date/times can be in different time zones.

Example:


  include "omdate.xin"
  process
     local integer elapsed-days
     set elapsed-days to ymdhms-day-difference("19980416155545+0500", "19710401080000+0000")
     output "%d(elapsed-days) days have elapsed between the specified dates/times.%n"
  ; The result of this program is:
  ;      9877 days have elapsed between the specified dates/times.

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OmniMark 9.1.0 Documentation Generated: September 2, 2010 at 1:38:10 pm
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