How to delete a (design) variable

Hi,

I would like to know if it's possible to delete a design variable,
declared with desVar(), from SKILL? How?
Is there any function to delete all design variables?

Is it possible to delete a global variable (not a design variable)
from SKILL (that was previouslz defined in SKILL script)?

Thanks for your answers.
Kind regards,
Marco

 

I would like to know if it's possible to delete a design variable,

I'm not aware of any, but... I can't see a situation where it could be necessary...

To reset everything you can re-issue the design(...) command.

yourVar = 'unbound


Cheers,
Stéphane

 

This seems not to work for me
If I do:
desVar("a" 1)
desVar("b" 2)
desVar()

I get:
(("a" "1")
("b" "1")
)

If now I call design():
design("myLib" "myCell" "schematic")
desVar()

design variables are still there. in fact I get again:
(("a" "1")
("b" "1")
)


The reason I'd like to clear all design variables is that I launch
several scripts for several different cells, which may use the same
name for some design variables.
I just want to be sure that the value of a desVar meant for a circuit
is not used for another one, in case for the new circuit the new value
was not specified (because I forgot to set the new value).
Clearing the design variable would easily solve this problem, because
I would get a message that the design variable was not defined for the
second circuit, thus pointing out the bug in the script (i.e. the
missing new value).

Thanks!

Marco

 

Use:

delete('desVar)

to delete the lot. Or:

delete('desVar "a")

to delete a specific variable.

Assigning a variable to 'unbound was for normal SKILL variables, not for OCEAN
design variables.

Regards,

Andrew.

 

Thanks for the hint!

BTW: Is this an undocumented function?
I could not find how to do this in the Cadence documentation and still
can't (I now tried searching "delete\(","delete","delete" AND
"SKILL").

Kind regards,
Marco

 

No, it's documented. You'll find it in the OCEAN reference manual - for example:
<ICinstDir>/doc/oceanref/oceanref.pdf - a logical place to look for OCEAN
functions...

Also, in "cdsFinder".

Regards,

Andrew.

 

Thanks and sorry (stupid me I did not use the correct keywords for
searching!).
Kind regards,
Marco