Using sum() to Calculate the Sum of a 2D Array

[dave_59]

Constraint randomization of an array

In reply to mseyunni: Let’s say you have rand bit [3:0] arr[5]; This means that each element of arr can have the value 0-15. Since the sum() method returns a value that is the same type of each element, that means arr.sum() can only return a value between 0-15. However the maximum possible sum is 5x15=75 which requires at least 7 bits to represent. So you would have to write arr.sum() with ( 7’(item) ) to get a result without overflowing. However, if if you constrain each element to 3 o…