User guide

24-39
SystemVerilog Testbench Constructs
if(i)
$display("Randomization Success");
else
$display("Randomization Fails");
end
endprogram
Notes
1. Empty array - If the array over which the aggregate operation is
defined has size 0, then the behavior is as follows:
- array.sum(): The expression is substituted by 0.
- array.product(): The expression is substituted by 1.
For all other aggregate methods there is a runtime error if
reference to the aggregate operation is in an ON constraint block.
2. Array types - The array aggregate methods and the foreach loop
support the fixed size array, dynamic array, associative array,
and SmartQ types of arrays in every context.
Unsupported features in Array aggregates:
• Using virtual interfaces to refer to variables inside array
constraints.
• Array aggregates of SV style (and, xor, or, etc.)
• Array aggregates outside constraint blocks (and, xor, or, etc).
• Array aggregates with usage as follows: array.cum with (item ==
item.index).