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Nested ddt suport

Alan21

Hi,

While simulating VAMS code using irun ,I came across this error.

ncsim: *E,SYERROR : Encountered nested `ddt' operator. Do not nest `ddt' operators.

Is there any solution for this ?

  • Yes, make sure you have an internal signal (e.g. an electrical signal) to store the results of the inner ddt, and then use that signal in the resulting ddt. By using this intermediate signal you can implement a second derivative - you just can't do it in a single statement.

    Regards,

    Andrew.

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