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

  // A and B signed integers (e.g., 3'b100 = -4, 3'b111 = -1)
  input  logic [2:0] A, B;
  output logic       is_lt, is_eq, is_gt;

  // subtraction result (intermediate)
  logic [2:0] sub;
  assign sub = A - B;

  assign is_eq = ~(sub[0] | sub[1] | sub[2]);
  assign is_lt = sub[2];
  assign is_gt = ~is_eq & ~is_lt;

endmodule  // comparator