// nandgame condition checker

`timescale 1us/1us

`ifndef NANDGAME_CONDC
`define NANDGAME_CONDC

module  cond_check #(
  parameter DATA_WIDTH = 16
) (
  // operand
  input [(DATA_WIDTH-1):0] X_in,
  // check whether operand < 0
  input wire check_ltz_in,
  // check whether operand == 0
  input wire check_eqz_in,
  // check whether operand > 0
  input wire check_gtz_in,

  // result of check
  output wire result_out
);

wire is_neg_int;
assign is_neg_int = X_in[(DATA_WIDTH - 1)] == 1;

wire ltz_result_int, eqz_result_int, gtz_result_int;
assign ltz_result_int = check_ltz_in && is_neg_int;
assign gtz_result_int = check_gtz_in && !is_neg_int && !(X_in == 0);
assign eqz_result_int = check_eqz_in && (X_in == 0);

assign result_out = ltz_result_int || gtz_result_int || eqz_result_int;

endmodule

`endif