Q'slew behavior with a discontinuous Q

Hi all,

I have come across with an issue related to the correct behavior of Q'slew
in VHDL-AMS standard.

For the following pseudo example,
quantity Q, Q2 real :=0.0;
if (xxx)
    Q == 1.0;
else
    Q == 2.0;

Q2 == Q'slew(100, -100);

Suppose, quantity Q has an immediate jump at t0 from 1.0 to 2.0;

xxx: some digital condition.
Q, Q2 are quantities.

The attached doc contains my interpretation of the LRM behavior with
illustrated figure. I also explain what may be the should-be behavior in
this case and another option to deal with this if my interpretation of LRM
is accurate.

Please share your thoughts on this issue.

Regards,
Zhichao

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