In reply to chr_sue:
I have written this code but not getting correct value
class scaling;
int pclk;
int scaledown;
real polling_cnt;
function pri(int pclk, scaledown);
realtime polling = 0.6us;
polling_cnt = (polling * pclk) / scaledown;
endfunction
endclass
module priyanka();
scaling s=new();
//int pclk,scaledown;
initial begin
s.pclk = 500000000;
s.scaledown = 1000;
s.pri(s.pclk,s.scaledown);
$display("%d ",s.polling_cnt);
end
endmodule