Automatic load user-defined calculator functions

Dear jorgevdelacruzNm

jorgevdelacruzN said:

but I would like to know if there is a way to automatic define it in the "Skill User Defined Functions" (Function Panel) by using .cdsinit or .cdsenv.

The following On-line support document details how to automatically add a custom SKILL function by placing a load statement in one's active .csdinit and then registering it as a Calculator special function.

https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1Od0000000nVbJEAU&pageName=ArticleContent

Does this help?

Shawn

Hi Shawn, Jorge,

The method that Shawn pointed to is the old (now obsolete) method of doing this (I've asked for the article to be retired). Whilst it still works, a far better way is to use the "fx" button in the calculator function panel or Explorer/Assembler expression builder. This allows you to build a form that appears just like all the others in the calculator (if a form is needed) and takes care of automatic loading of the code too without needing to add anything into the .cdsinit.

Regards,

Andrew.

Dear Andrew,

As usual, I thank you for your added insight and directions!

I actually do use the fx button to add custom functions to the Calculator. I only referenced the prior article as I was not sure if the "fx" procedure registers the custom function for only the current Virttuoso session or for all future Virtuoso sessions. I just checked and, as you correctly stated, it does. Thank you!

Shawn

Hi Shawn, Andrew,

Thank you for your answers.

Using the fx button works and keeps the function on the calculator for all the cadence sessions in the same working directory. But I'm looking for a solution where I can keep the function on the calculator for several projects on different working directories.

For example, I've tried adding the following lines:

procedure( abMovingAvgSpecialFunctionCB()
   calSpecialFunctionInput( 'abMovingAvg '(timeWindow gain))
    )

 calRegisterSpecialFunction( list( "abMovingAvg" 'abMovingAvgSpecialFunctionCB))

at the end of the abMovingAvg.il function posted on: https://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin%3AViewSolution%3BsolutionNumber%3D11613392

and load the function in the .cdsinit with load(abMovingAvg.il) but the gui of the function doesn't appear as when I add the function with the fx button.

Hi Jorge,

It's not surprising that the calRegisterSpecialFunction doesn't add the UI part - there's a completely different set of functions to add the UI when using the "cal" function to do this, and the UI is not integrated with the calculator, so it's really not a good idea. So don't go down this route - as I said, it's obsolete.

When you use the "fx" button it actually adds it into your home directory's .cadence dir, not the working directory, so it should be visible across multiple workspaces for then same user. You could move the files into a central shared .cadence directory, or there are some functions to help share the setup - see Virtuoso Analog Design Environment XL Signals, Expressions & the Calculator slides 30-36, particularly slides 34-36.

Andrew.

This blog might be useful too (although it doesn't cover the loading of central files):  Virtuosity: Sharing Custom SKILL Calculator Functions 

Andrew

Hi Andrew,

Thank you. I used the awvLoadSharedCustomFunctionsFile command in the .cdsinit file and now I can see the custom functions on all my projects.

Regards,

Jorge