| Group: Comparators | |
| A common function of testbenches is to compare streams of transactions for | |
| equivalence. For example, a testbench may compare a stream of transactions from | |
| a DUT with expected results. | |
| The UVM library provides a base class called ~uvm_in_order_comparator~ and two | |
| derived classes: ~uvm_in_order_built_in_comparator~ for comparing | |
| streams of built-in types and ~uvm_in_order_class_comparator~ for comparing | |
| streams of class objects. | |
| The ~uvm_algorithmic_comparator~ also compares two streams of transactions, | |
| but the transaction streams might be of different type objects. Thus, this | |
| comparator will employ a user-defined transformation function to | |
| convert one type to another before performing a comparison. | |
| (see uvm_ref_comparators.gif) | |