In reply to iamPkumar:
From the above code, can we print $real_time - current_time like below
//////
($realtime -current_time == 0.5ns) ||
($realtime -current_time == 0.500500501ns, $display(“Time_period = %t”,$realtime - currenttime) ||
($realtime -current_time == 0.499750125ns) ||
($realtime -current_time == 0.500751127ns) ||
($realtime -current_time == 0.476190476ns);