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Time math in REXX. Are there time math functions?

 
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jasorn

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Joined: 12 Jul 2006
Posts: 153
Location: USA

PostPosted: Sun Apr 12, 2009 10:41 pm    Post subject: Time math in REXX. Are there time math functions?
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I need to do some math on time fields using REXX. Are there time math functions or do I need to create my own? I need to do stuff like compare two time strings and calculate the time difference, add minutes to a time string, et al.

I search the rexx and clist forum here for 'TIME' and got no hits. I googled a bit and only saw example of how to get the current time and elapsed time but not how to do time math.
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Anuj Dhawan

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Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Sun Apr 12, 2009 11:25 pm    Post subject:
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Hi,

I'm not a rexx expert, however a little search gives this simple example to calculate the hours:
Code:
/* rexx */
date1 = '12 Oct 2006'
time1 = 9
/* use "date2 = DATE()" for current date */
date2 = '13 Oct 2006'
/* use "time2 = time('H')" for current time */
time2 = 11

date1 = DATE('B',date1)
date2 = DATE('B',date2)
datediff = date2 - date1 - 1
hourdiff = 24-time1+time2
hourdiff = hourdiff + 24*datediff
say hourdiff
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jasorn

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Joined: 12 Jul 2006
Posts: 153
Location: USA

PostPosted: Mon Apr 13, 2009 9:11 am    Post subject:
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Anuj,
Thanks for replying. I should have mentioned I have routines for time math I could implement but wanted to know if there were functions built in I was missing before I used them. I used them for now but will check with the rexx folks at work and see what they use.
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expat

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Joined: 14 Mar 2007
Posts: 8593
Location: Back in jolly old England

PostPosted: Mon Apr 13, 2009 1:36 pm    Post subject:
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If the function exists it will be in the manual. Have you looked.
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