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module top(
input wire [3:0] inp,
output wire [3:0] out1, out2
);
function automatic [3:0] pow_a;
input [3:0] base, exp;
begin
pow_a = 1;
if (exp > 0)
pow_a = base * pow_a(base, exp - 1);
end
endfunction
function automatic [3:0] pow_b;
input [3:0] base, exp;
begin
pow_b = 1;
if (exp > 0)
pow_b = base * pow_b(base, exp - 1);
end
endfunction
assign out1 = pow_a(inp, 3);
assign out2 = pow_b(2, 2);
endmodule
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