Calculator function to check conditions on 3 (or N) waveforms

Hello,

I have a question about the use of calculator functions.

As an output of an s-parameter (or ac) simulation, I have three custom waveforms a_w, b_w, c_w which are all functions of frequency, i.e.  a_w(f), b_w(f), c_w(f).

I would like to check these waveforms to see if there is any frequency point "f0" satisying:

1) a_w(f0)<0

2) b_w(f0)=0

3) c_w(f0)>0

without visual observation on the graph.

Is there a way to do this using cadence calculator?

My cadence version is IC6.1.7-64b.500.23.

Thanks in advance.