def read_recordmark(self):
        fmt = '>' if self.big_endian else '<'
        fmt += 'q' if self.recordmark_8 else 'i'
        size = _SZ_LONG if self.recordmark_8 else _SZ_INT
        return struct.unpack(fmt, self.file.read(size))[0]


    ######## Output Operations ########
Returns value of next recordmark.
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.util/src/openmdao/util/stream.py/Stream.read_recordmark