understanding ekf2 of px4 firmware

Respected Sir,
Thank you for replying on http://discuss.px4.io/t/understanding-ekf2-code/5311 portal.
I have one doubt that code which is on https://github.com/PX4/ecl/blob/master/matlab/scripts/Inertial%20Nav%20EKF/GenerateNavFilterEquations.m is exactly same as ekf2 code of px4 firmware.
Thanking you,
Ajay