The meaning of some magic number in EVD process using ARM PL

I am currently using the ARM PL EVD chbevd API, and I want to understand why there are quite a few "magic numbers" when using this API.

  1. Is it possible to understand the meaning of these numbers?
  2. Is it feasible to incorporate these numbers directly into the API design to hide them from the user?

Thanks!

ARM PL chbevd

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