Split an array equally and unique

[dave_59]

Sum() function behaviour in constraint

Hi, can any one explain the constraint statement with sum(). i am not able to understand working of sum() call in below code. module tb; class cls; rand int unsigned d; rand int unsigned arr[10]; constraint arr_c{ foreach(arr[i]) { arr[i] inside {[1:10]};} foreach(arr[i]) { arr.sum() with (int'(item==arr[i])) == (arr[i]==d ? 2:1);} } endclass initial begin cls obj = new; int sum1; repeat(5) begin void'(obj.randomize()); sum1 = obj.arr.sum(); $display("d = %d, arr …