Constraint for random member of random member

UVM
,
1

class cfg0
rand bit[31:0] rate
constraint c_rate {rate inside {[something]};}
…
endclass

class cfg1
rand cfg0 m_cfg0[4];
…
endclass

How to constrain total rate (rate sum) in cfg1 so that the sum of m_cfg0[i].rate<N ?

2

In reply to cattt:

You can try with following code:


class cfg1;
  rand cfg0 m_cfg0[4];
  constraint c_rate_sume {
    m_cfg0.sum(x) with (x.rate) == SOME_EXPECTED_VALUE;
  };
  function new(); 
    foreach(m_cfg0[i])
      m_cfg0[i] = new;
  endfunction
endclass

This is the test that I created, it worked.