def _is_pre_req(self, flag):
        """check the flags for a requirement, return 1 or 0 whether or not requires
           is a pre-requires or a not"""
        # FIXME this should probably be put in rpmUtils.miscutils since 
        # - that's what it is
        newflag = flag
        if flag is not None:
            newflag = flag & 64
            if newflag == 64:
                return 1
            else:
                return 0
        return 0

    def _requires_with_pre(self):
        """returns requires with pre-require bit"""
        name = self.hdr[rpm.RPMTAG_REQUIRENAME]
        lst = self.hdr[rpm.RPMTAG_REQUIREFLAGS]
        flag = map(flagToString, lst)
        pre = map(self._is_pre_req, lst)
        lst = self.hdr[rpm.RPMTAG_REQUIREVERSION]
        vers = map(stringToVersion, lst)
        if name is not None:
            lst = zip(name, flag, vers, pre)
        mylist = misc.unique(lst)
        return mylist