Experimental Physics and
Industrial Control System

Matthieu Bec <[email protected]> · Tue, 28 Sep 2010 18:01:51 -0400

Andrew,
I'll be the devil's advocate and recommend a sub/gensub/asub. Your
expression is getting quite 'complex' and may deserve a bit of
documentation: external readers would find that easily in the
SNAM/gensub source code.

It might also give more padding should the expression change and grow
(more input, more tests, less characters).

Finally, a sub's routine will get compiled and be slightly more
efficient - I'm assuming a calc interprets its expression each time it
process but have not looked at the internal to be 100% sure.
Regards,
Matthieu
On 09/28/10 17:43, Tim Mooney wrote:

Andrew,
You don't need a subroutine record for this. You might be able to get it
into a single calcout
record using techniques folks have already mentioned, but as they've
noted, the result might
be hard to understand.
I would do this with a transform record, if the record is available.
You'd have 16 calc-type expressions, each with a comment to describe it,
all in one record,
so you could break this into separate expressions and then combine the
results.
For example:
field(CLCF, "235>B && 5>D && 5>E")
field(CLCG, "B*0.00835-0.7")
field(CLCH, "A+(C-B)*0.25")
field(CLCI, "F?(G>H?G:H):0)
Actually, I'd rewrite that last expression as
field(CLCI, "F?MAX(H,G):0")
This seems to me easier to understand and modify than the equivalent
implementation
with calcout records.
Tim
On 9/28/2010 3:03 PM, Andrew Wagner wrote:

(235>B&& 5>D&& 5>E) ? (B*0.00835 - 0.7> A + (C-B)*0.25 ? B*0.00835 -
0.7: A + (C-B)*0.25): 0

--
Matthieu Bec              Gemini Observatory
Tel: +56 51 205785        c/o AURA, Casilla 603
Fax: +56 51 205650        La Serena, Chile

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System