anchor_cmp
else if(fptr == &anchor_cmp) return 1;
return anchor_cmp(x, y);
a->tree = rbtree_create(anchor_cmp);
int anchor_cmp(const void* k1, const void* k2);
else if(fptr == &anchor_cmp) return 1;
return anchor_cmp(x, y);
a->tree = rbtree_create(anchor_cmp);
int anchor_cmp(const void* k1, const void* k2);