Why do compare need to arguments, specially why second arguments of uvm_comparer comparer

UVM
1

Why second arugment in do_compare , that uvm_comparer comparer use ?

do_compare
do_compare594×100 11.7 KB

2

Please go over the next user-guides:

https://verificationacademy.com/verification-methodology-reference/uvm/docs_1.2/html/files/base/uvm_object-svh.html#uvm_object.do_compare

https://verificationacademy.com/verification-methodology-reference/uvm/docs_1.2/html/files/base/uvm_comparer-svh.html

3

Just another view. The compare function is always related to a comparer. You can use the standard comparer which is uvm_comparer. But there might be reasons to create your own comparer as an extension of uvm_comparer. This has to be pointed out by passing the actual comparer to the compare function.

4

I did not get clarity. Can you please elaborate the answer…

5

This is what the UVM Refernce is saying:
The uvm_comparer class provides a policy object for doing comparisons. The policies determine how miscompares are treated and counted. Results of a comparison are stored in the comparer object. The uvm_object::compare and uvm_object::do_compare methods are passed a uvm_comparer policy object.