sbit as parameter to a function

Is it possible to define a sbit variable

e.g.
sbit port0_0 = P0 ^ 0;

and to call a function with this sbit-definition as a parameter?

e.g.
setPortPin(port0_0);

And how does the declaration of this function looks like, if possible?

Would be great if anyone could help me in this thread.

Thanks Benny

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