tld_check_4tz - API function
int tld_check_4tz(const uint32_t * in, size_t * errpos, const Tld_table * tld);
Test each of the code points in in for whether or not they are allowed by the data structure in tld , return the position of the first character for which this is not the case in errpos .
Return value: Returns the Tld_rc value TLD_SUCCESS if all code points are valid or when tld is null, TLD_INVALID if a character is not allowed, or additional error codes on general failure conditions.
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