// Implements a 3-bit comparator circuit
module comparator #(N = 3) (A, B, is_lt, is_eq, is_gt);

  // A and B signed integers (e.g., 3'b100 = -4, 3'b111 = -1)
  input  logic [N-1:0] A, B;
  output logic         is_lt, is_eq, is_gt;

  // subtraction result (intermediate)
  logic [N-1:0] sub;
  assign sub = A - B;

  assign is_eq = ~|sub;
  assign is_lt = sub[N-1];
  assign is_gt = ~is_eq & ~is_lt;

endmodule  // comparator