## The uvm_object class

The uvm_object class is the base class for all UVM classes. From it, all the rest of classes are extended. It provides basic functionalities such as print, compare, copy and similar methods.

This class can be used when defining reusable parts of a sequence items. For example, in a packet like uvm_sequence_item, we could define a uvm_object extended object for defining the header. This would be:

This packet_header could be included in a packet class for conforming the uvm_sequence_item (the transaction) which will compose the sequences:

## Pseudo-random number generator with Fibonacci sequence

$s_k = (k\cdot A) \bmod B$

$$s_k$$ is the pseudo-random number and $$A$$ and $$B$$ are prime numbers. $$k$$ is in the range $$[0,B-1]$$. If $$k$$ is greater than $$B-1$$, the results will be repeat as $$B$$ is the period of the sequence.
For example, $$A = 7$$ and $$B = 17$$. This sequence written in MATLAB could be: