Array Method .sum() for multiple dimension array

SystemVerilog
5

In reply to dave_59:

Hi Dave,

Could you help me understand what is going wrong here?

module test();
 
class temp;
  rand int box[][];
 
  constraint c {
    box.sum() with (item.sum() with (item));
    box.size == 10;
    foreach(box[i,j]) {
      box[i][j] <= 5;
    }
  }
endclass
  
initial
	begin
      temp t = new();
      t.randomize();
      $display("var is %0d", t.box.size);
	end
 
endmodule

ncsim> run
    box.sum() with (item.sum() with (item));
          |
ncsim: *E,RNDCNSTE (./testbench.sv,7|10): Randomization constraint has this error, which will cause the randomize function to return 0 and no new rand values will be set:
Unsupported operator 'sum over upper dimension of multi-dimensional array' in this constraint expression.