int ldns_dname_compare(const ldns_rdf *dname1, const ldns_rdf *dname2);
int ldns_dname_interval(const ldns_rdf *prev, const ldns_rdf *middle, const ldns_rdf *next);
DESCRIPTION
ldns_dname_compare()
Compares the two dname rdf's according to the algorithm for ordering
in RFC4034 Section 6.
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dname1: First dname rdf to compare
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dname2: Second dname rdf to compare
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Returns -1 if dname1 comes before dname2, 1 if dname1 comes after dname2, and 0 if they are equal.
ldns_dname_interval()
check if middle lays in the interval defined by prev and next
prev <= middle < next. This is usefull for nsec checking
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prev: the previous dname
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middle: the dname to check
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next: the next dname
return 0 on error or unknown, -1 when middle is in the interval, +1 when not
AUTHOR
The ldns team at NLnet Labs. Which consists out of
Jelte Jansen and Miek Gieben.