unpackInt16 method
Implementation
int unpackInt16() {
  int uint16 = unpackUint16();
  return uint16 < 0x8000 ? uint16 : uint16 - (1 << 16);
}int unpackInt16() {
  int uint16 = unpackUint16();
  return uint16 < 0x8000 ? uint16 : uint16 - (1 << 16);
}