Re: checking the content of the waveform record

[Tim Mooney <mooney@aps.anl.gov>]

If you have the calc module (2.6 or higher), the easiest way is probably 
to use the aCalcout (array calcout) record. Otherwise, I'm with Ron.

If you do have the aCalcout record, here's how I'd configure it:

Say the aCalcout record's AA field is the reference array, and BB is 
your alarm vector. The expression "AA=BB" is nearly what you want, but 
it yields an array (whose elements are '1' where AA and BB are the same, 
and '0' where they differ). You can roll this array up into a single 
scalar value with the function amin().

In actual practice, "amin(aa[0,35]=bb[0,35])" yields the scalar value 
'1' only if the first 36 elements of AA are the same as the first 36 
elements of BB.

Tim Mooney

Chestnut, Ronald P. wrote:
> My first take would be a simple subroutine record which does the compares you want and returns success or failure.
>
> Ron Chestnut 
>
> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Vladimir Sirotenko
> Sent: Monday, December 10, 2007 11:49 AM
> To: EPICS tech-talk
> Subject: checking the content of the waveform record
>
> Does anyone know what is the easiest way to check the content of the waveform record against predefined one? There is a record with 36 elements and we have to raise an alarm if any of it's elements is differ from reference one. Of cource I can use many subArray records, one for every waveform element, then several calc records and so on .. But may be there is more elegant way of doing that?
>
> Thanks,
> Vladimir
>