Function toHex16Bit

Utilities/cmjsoncpp/src/lib_json/json_writer.cpp:257–266

                           "f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff";

static String toHex16Bit(unsigned int x) {
  const unsigned int hi = (x >> 8) & 0xff;
  const unsigned int lo = x & 0xff;
  String result(4, ' ');
  result[0] = hex2[2 * hi];
  result[1] = hex2[2 * hi + 1];
  result[2] = hex2[2 * lo];
  result[3] = hex2[2 * lo + 1];
  return result;
}

static void appendRaw(String& result, unsigned ch) {
  result += static_cast<char>(ch);