Hi,
here are some links which could be useful for you:
Digital Signal Processing Course – Arm
https://community.nxp.com/thread/325915
I hope it will help you to move forward...
Regards,
Lukas
S32K144 is a car standard MCU launched by NXP, the kernel is cortex-m4f, with FPU and DSP functions,However, it is rare to see the use of methods or routines, very hope that someone familiar with this kind of content to give answers