abt_init (&abt, compare_elements, reaugment_elements, &aux_data);
elements = xnmalloc (max_elems, sizeof *elements);
values = xnmalloc (max_elems, sizeof *values);
abt_init (&abt, compare_elements, reaugment_elements, &aux_data);
elements = xnmalloc (max_elems, sizeof *elements);
values = xnmalloc (max_elems, sizeof *values);