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Function calls fail now

StephanWeber

Hi,

in 613 up to early 617, I used many self-defined functions like this:

procedure(sqr(x)
prog((y)
y = (x)**2
return(y)
)
)

However, in my new company this does not work anymore, i.e. calling sqr(2.0) gives an error on "function x".

Modifying the code to this works (in 617.500.15): 

procedure( sqr( x )
x**2
)

This workaround fits, but can anybody tell, why the original 1st definition does not work anymore?

Is there an cdsenv setting to let the old code run well again?

Best regards, Stephan  

Parents
  • mbracht

    Hi Stephan,

    I strongly doubt this ever worked - not even in very old virtuoso releases. Keep in mind that SKILL is a Lisp based language and in Lisp/SKILL a symbol between a pair of round brackets is considered to be a function call with the name of the function  being just that symbol. All remaining elements in the round brackets are the arguments being passed to that function. So (x) is actually the same as x(). Just out of curiosity - what would you expect the round brackets to do in the first place?

    Max

  • Andrew Beckett
    in reply to mbracht

    Stephan,

    Max is right - this has never worked (I did check in a 15 year old release just to be sure, but I know for a fact that it wouldn't have worked). All you need to do is remove the unnecessary brackets around the x:

    procedure(sqr(x)
      prog((y)
        y = x**2
        return(y)
      )
    )

    Andrew

  • StephanWeber
    in reply to Andrew Beckett

    Thanks, Andrew. I managed to make my functions running fine.

Reply
  • StephanWeber
    in reply to Andrew Beckett

    Thanks, Andrew. I managed to make my functions running fine.

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