SelectiveScanEasy forward result have Nan

[regainOWO]

this project is amazing!
i change the SelectiveScanOflex to SelectiveScanEasy for cpu inference, but the result have Nan,

i found it cause by tmp_dtBus_div_rAts = (dtBus / rAts), the rAts have zero value, how to fix this?

[MzeroMiko]

It is only a toy version of code.
For code that is appliable in practise, use mamba-2 instead.