Function swap_bytes

g2all/700/lapse.js:696–703

(x, byte_length)

function double_free_reqs2(sds) {
  function swap_bytes(x, byte_length) {
    let res = 0;
    for (let i = 0; i < byte_length; i++) {
      res |= ((x >> (8 * i)) & 0xff) << (8 * (byte_length - i - 1));
    }

    return res >>> 0;
  }

  function htons(x) {
    return swap_bytes(x, 2);