comefrom: <qiyuangong>405_Convert_a_Number_to_Hexadecimal_2.py
code: def tohex(val, nbits):
      return hex((val + (1 << nbits)) % (1 << nbits))
masked: def sample_funcname ( var_0 , var_1 ) :
      return hex ( ( var_0 + ( 1 << var_1 ) ) % ( 1 << var_1 ) )
  