/** 
 * @param {number} num
 * @returns {string}
 */
const num2hex = (num) => num.toString(16).toUpperCase().padStart(2, "0");

/** 
 * @param {string} hex
 * @returns {number}
 */
const hex2num = (hex) => parseInt(hex, 16);

/**
 * Convert a number to binary, padded to 8 bits
 * See here for an explanation: https://stackoverflow.com/questions/9939760/how-do-i-convert-an-integer-to-binary-in-javascript
 * @param {number} num
 * @returns {string} binary representation of the input
 **/
const num2bin = (num) => (num >>> 0).toString(2).padStart(8, "0");

/**
 * Convert a number to binary, padded to 4 bits
 * See here for an explanation: https://stackoverflow.com/questions/9939760/how-do-i-convert-an-integer-to-binary-in-javascript
 * @param {number} num
 * @returns {string} binary representation of the input
 **/
const num2bin_4bit = (num) => (num >>> 0).toString(2).padStart(4, "0");

/** 
 * @param {string} bin
 * @returns {number}
 */
const bin2num = (bin) => parseInt(bin, 2)

/**
 * @param {Boolean} bool
 * @returns {0|1}
 **/
const bool2bit = (bool) => bool ? 1 : 0;

module.exports = {
  "num2hex": num2hex,
  "hex2num": hex2num,
  "num2bin": num2bin,
  "num2bin_4bit": num2bin_4bit,
  "bin2num": bin2num,
  "bool2bit": bool2bit,
}