Deducing hilbert filter specifications

In our embedded c application, we have a hilbert filter without known specification probably based on fdesign class. We are only aware of filter coefficients which are further used in convolution to get real and imaginary information of signal.

Some references from matlab scripts use hilbert function ( https://in.mathworks.com/help/signal/ref/hilbert.html ) mentioned here.

However, I am unable to find the specs for filter used in C code. I assume that works as hilbert.

I'm new to matlab hence, unable to figure this out on my own.

Here are few questions I have :

1. Does hilbert function use some kind of filtering mechanism with some default filter specs.??
2. Is there any way with which I can deduce filter specs from coefficients in C code which will tell me what kind of filter is used?

Thanks in advance.