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methods for variable integer to string conversion

JMCaJHU

 Is there any way to convert a variable of the integer type to a string.  Currently i must create a set of pins with names varying from IN0 onward.  I tried everything from casting the int to string with quotations to evaluating the symbol/variable then casting into a string with symbolToString.  All seem to be limited with no direct way from int to string.  Currently i have resorted to using random naming for the program to work as follows:

 for(j 0 n

if(j==0 then
db_outnet=dbCreateNet(db_outcell "IN0")
db_figId = dbCreateRect(db_outcell  list("METAL1")  list(0:5.025 0.375:5.4))
dbCreatePin(db_outnet db_figId "IN0")

else
outname=symbolToString(gensym('IN))
db_outnet=dbCreateNet(db_outcell outname)
db_figId = dbCreateRect(db_outcell  list("METAL1")  list(0:(3.7+rth*j) 0.375:(rth*j+4.1)))
dbCreatePin(db_outnet db_figId outname)

outname=symbolToString(gensym('IN))
db_outnet=dbCreateNet(db_outcell outname)
db_figId = dbCreateRect(db_outcell  list("METAL1")  list(0:(5.025+rth*j) 0.375:(rth*j+5.4)))
dbCreatePin(db_outnet db_figId outname) 

 This creates IN0 then continues creating input pins in numerical order from a random index.  I need to be able to create "IN" + j.string in java terms.

  • Thanks Andrew & Derek for your useful inputs.

    Yes, you're right, I've made a transformer pcell using ROD functions. Right now, I fill in the parameters (space, width, etc. ) in the code itself & then load the file in the CIW. Your idea of using a form is perfect. I was thinking, instead of making a form afresh, which may take some effort for a new Skill user like me, why not pull (copy) an existing CDF form from the IBM library & add a few fields. An inductor CDF form would be a close match for this as there're no transformers in the IBM PDK. I shall appreciate if you could outline some steps towards achieving this.

     

    Best regards,

    Adil.

  • Adil,

    If it's really a pcell (defined with pcDefinePCell), then it makes no sense to create a form. 

    If you have no CDF defined, you should just be able to place an instance of the pcell (as usual) in the layout and the prompts will be names of the pcell parameters - and all will be fine.

    If you want to make the create instance/edit properties form a little cleaner, you may then want to define CDF for the component. This allows you to give nicer prompts to the user. If you do this, please ensure that your CDF default values match the pcell default values (you'll get in a horrible mess otherwise).

    To create the CDF, you can start with Tools->CDF->Edit CDF. Make sure you pick "Base" and then add the parameters you need - make sure the types match the types you're using for each CDF parameter.

    You may find it easier to define a few, then use:

    cdfDump("libName" "fileName.cdf" ?cellName "cellName")

    (change the bits in quotes as you need)

    Regards,

    Andrew.

  • Thanks Andrew for your reply.

     If it's really a pcell (defined with pcDefinePCell), then it makes no sense to create a form

    Well, I've not defined it with pcDefinePCell, all I've done is that I've put together ROD functions, like CreatePolygon etc.  and made the transformer.   

    If you want to make the create instance/edit properties form a little cleaner, you may then want to define CDF for the component. This allows you to give nicer prompts to the user. If you do this, please ensure that your CDF default values match the pcell default values (you'll get in a horrible mess otherwise).

    I think this is what I will end up doing but by copying the existing inductor CDF and modifying it.

     

    Regards,

    Adil.
  • Hi Adil,

    Note that unless you make it into a pcell, creating CDF is going to be of no help. CDF is Component Description Format, and unless you have a component (ie a cellView) there is no point in using cell CDF.

    Regards,

    Andrew

  • Thanks once again Andrew for your input.

    I guess I've to first go through the skill user interface in order to familiarize myself with the nitty gritty of creating a pcell before I can start asking sensible questions :)

    Best regards and have a great weekend,

    Adil.

     

  • Hi Adil,

    No, creation of pcells is in the Parameterized Cell documentation, not the "User Interface" documentation (it's nothing to do with the user interface).

    Anyway, run cdnshelp (if using IC613) or cdsdoc (if IC5141 and you should be able to find it.

    Best Regards,

    Andrew

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