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|
module opt_share_test(
input [15:0] a,
input [15:0] b,
input [15:0] c,
input [15:0] d,
input sel,
output reg [47:0] res,
);
wire [15:0] add_res = a+b;
wire [15:0] sub_res = a-b;
wire [31: 0] cat1 = {add_res, c+d};
wire [31: 0] cat2 = {sub_res, c-d};
always @* begin
case(sel)
0: res = {cat1, add_res};
1: res = {cat2, add_res};
endcase
end
endmodule
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