What do these constants mean in six-step firmware library source code？

[Fchun.1]

I don't know what these numbers represent.

[Laurent Ca...]

Dear @Fchun.1​ 

I am very sorry but I don't think we have enough ressources to explain all the pieces of code shared with the community.

Do you have a specific problem to solve with the use of this function for which we can help you?

Best regards

Laurent Ca...