Strange behavior on G1 version 2.1.14588 (2021 05 05))

[rprosperi]

Sorry, to be clear, my comment should have said "On the 48/50, In approx mode, SIN(Pi) is not 0.00, it's -2.06761537357E-13), so the math is correct."

If it's 0.00 on the Prime in Approx mode in Home, I'd guess that it's fudging the answer since the legacy 'pure' calculation shows the actual result, which is consistent with the value you reported.

Maybe Joe Horn can explain further...