``` //n人表决器 module voter_n#( parameter N = 7 //设置表决总人数 )( output reg pass, //结果 input [N-1:0] vote //投票情况 ); //位宽计算函数 function integer clogb2 (input integer depth); begin for (clogb2=0; depth>0; clogb2=clogb2+1) depth = depth >>1; end endfunction reg[clogb2(N) - 1:0] sum; integer i; always @(vote) begin sum=0; for(i=0;i<N;i=i+1)//for语句if(vote[i]) if(vote[i])sum=sum+1; if(sum > (N>>1) + N[0]) pass=1; //若超过半赞成，则pass=1 else pass = 0; end endmodule ```