`include "cpu_pkg.svh"

import cpu_pkg::*;

module alu16 (
    input  logic [15:0] operand_in_i,
    output logic [15:0] operand_out_o,

    input  logic        increment_i,
    input  logic        decrement_i
);

logic [15:0] op_inc;
logic [15:0] op_dec;

assign op_inc = (operand_in_i + 16'h01);
assign op_dec = (operand_in_i - 16'h01);

assign operand_out_o = ({16{increment_i}} & op_inc) |
                       ({16{decrement_i}} & op_dec);
endmodule : alu16