101 Void_t* tsearch(const Void_t* key, Void_t** rootp,  in tsearch()  argument
104 Void_t* tsearch(key, rootp, comparf)  in tsearch()
106 Void_t**	rootp;
113 	if(!rootp ||
114 	   (!(dt = *((Dt_t**)rootp)) && !(dt = dtopen((Dtdisc_t*)(&Treedisc),Dtorder))) )
128 		*rootp = (Void_t*)dt;
129 	else if(*rootp == NIL(Void_t*) )
137 Void_t* tfind(const Void_t* key, Void_t*const* rootp,  in tfind()  argument
140 Void_t* tfind(key, rootp, comparf)  in tfind()
142 Void_t**	rootp;
149 	if(!rootp || !(dt = *((Dt_t**)rootp)) )
163 Void_t* tdelete(const Void_t* key, Void_t** rootp,  in tdelete()  argument
166 Void_t* tdelete(key, rootp, comparf)  in tdelete()
168 Void_t**	rootp;
176 	if(!rootp || !(dt = *((Dt_t**)rootp)) )
186 		*rootp = NIL(Void_t*);