// 32 bit Carry Look Ahead adder

module adder_c (operand1, operand2, cin, result, cout);
input [31:0] operand1, operand2;
input cin;
output [31:0] result;
output cout;

reg [31:0] carrychain;

wire [31:0] g =operand1 & operand2;

wire [31:0] p= operand1 ^ operand2;

always @(operand1 or operand2 or cin)
begin:  carry_generation
  integer i;
  carrychain [0] =g[0] + (p[0] & cin);
  for (i=1; i<32; i=i+1) 
  begin
     #0 
     carrychain[i] = g[i] + (p[i] & carrychain[i-1]);
  end
end
wire [32:0] shiftedcarry = {carrychain, cin} ;
//compute the sum

wire [31:0] result = p ^ shiftedcarry;
//carryout

wire cout =shiftedcarry [32];
endmodule