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How to pass parameters to sub-hierarchy cells with calculation

How to pass parameters to sub-hierarchy cells with calculation (e.g., Length = Length - 0.5 as below, which will flag as error)

The codes can't work when adding "Length = Length - 0.5" but work well if removing the calculation line. why?

Thanks a lot!

; Default Parameters
(
(Length string "1.0")
)

......

;get parameter value from the user interface
Length = evalstring(car(exists(prop pcParameters ((prop->name)=="Length")))->value)

;calculate new Length based on input
Length = Length - 0.5

;Build parameter list for instantiation

   paramList = list(
list("Length" "string" Length)
)

    ;Open sublevel device/structure
    nfet_c_Inst = dbOpenCellView(pcLib "nfet_c" "layout")

;Place initial subInst
nfet_c = dbCreateParamInst(pcCV nfet_c_Inst nil 0:0 "R0" 1 paramList)

Parents

weihai over 15 years ago

We have found the problem with your help and fixed it with "sprintf". We need convert the "Length" from float type to string type after the calculation. Thanks.
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weihai over 15 years ago

We have found the problem with your help and fixed it with "sprintf". We need convert the "Length" from float type to string type after the calculation. Thanks.
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