def missingValuesLowHigh(self):
        """This function returns the 'lowest' and 'highest' values used for
        numeric missing value ranges on the host system. This can be used in
        a similar way as the LO and HI keywords in missing values
        specifications (cf. MISSING VALUES foo (LO THRU 0). It may be called
        at any time."""
        lowest, highest = c_double(), c_double()
        func = self.spssio.spssLowHighVal
        retcode = func(byref(lowest), byref(highest))
        return lowest.value, highest.value
This function returns the 'lowest' and 'highest' values used for
        numeric missing value ranges on the host system. This can be used in
        a similar way as the LO and HI keywords in missing values
        specifications (cf. MISSING VALUES foo (LO THRU 0). It may be called
        at any time.
recipes/Python/577811_Pythreader__writer_spss_sav_files_Linux_Mac_/recipe-577811.py