RVSCC/rtl/priority_encoder.sv

`include "timescale.sv"

// 2**N to N Priority encoder
module priority_encoder #(
    parameter int N = 4
) (
    input logic [2**N - 1:0] data_in,
    output logic [N - 1:0] data_out,
    output logic valid
);
  always_comb begin
    data_out = N'('dx);
    for (int i = 0; i < 2 ** N; i++) begin
      if (data_in[i]) data_out = i[N-1:0];
    end
    if (data_in == 0) valid = 0;
    else valid = 1;
  end
endmodule