def _read_int16(f):
 return np.int16(struct.unpack('>h', f.read(4)[2:4])[0])

def _read_int16 ( f ) : return np . int16 ( struct . unpack ( '>h' , f . read ( 4 ) [ 2 : 4 ] ) [ 0 ] )
read a signed 16-bit integer .