Re: Fairly simple question about using time in Ada

[rtcoslet@rockwellcollins.com (R. Tim Coslet)]

"Chris Vinall" <cjvinall@dingoblue.net.au> wrote in message news:<3bb5234f$0$9274$afc38c87@news.optusnet.com.au>...
> I'm writing a program in which I need to be able to timestamp events and
> then later check how much real time has elapsed since that event occurred.
> It is essential that this timing operate to tenths of a second and
> hundredths of a second would be a lot better.
> 
> How do I go about doing this in Ada? My textbook mentioned something about
> Duration but was less than helpful.
> 
> Thanks for any help
> 
> Chris

See D.8(7)

To correctly do time stamping you need the package Ada.Real_Time
The constant Tick gives the timing accuracy of your implementation of
this package.

You would call the function Clock to get the current Time for use in
generating your time stamps.


Please note that other posters have not differentatiated between the
accuracy of a number and the precision of a number. They are
different! What you need for good time stamps is accuracy (fidelity to
reality), not precision (number of bits or digits used to represent
the value).