Function safe_add

scripts/passwordGenerator.js:87–91

(x, y)

      }

      function safe_add(x, y) {
        var lsw = (x & 0xffff) + (y & 0xffff);
        var msw = (x >> 16) + (y >> 16) + (lsw >> 16);
        return (msw << 16) | (lsw & 0xffff);
      }

      function rol(num, cnt) {
        return (num << cnt) | (num >>> (32 - cnt));