[Question] Does value of '__primitive_extension_fingerprint' have special meaning?

[Cj-bc]

I'm making 'float' primitive extension.

The problem is that:
I want to implement it by using integerArray so that we can calculate easily.
But I can't use integerArray as 'fingerprint' uses some alphabets.
I want to change the base __primitive_extension_declaration using only numbers.

If it is a problem, I'll use 'array' instead of 'integerarray'.