| Data Fields | |
| size_type | da_size | 
| The size, in bytes, of the double array. | |
| size_type | da_num_total | 
| The number of elements in the double array. | |
| size_type | da_num_used | 
| The number of elements used actually in the double array. | |
| size_type | da_num_nodes | 
| The number of nodes (excluding leaves). | |
| size_type | da_num_leaves | 
| The number of leaves. | |
| double | da_usage | 
| The utilization ratio of the double array. | |
| size_type | tail_size | 
| The size, in bytes, of the tail array. | |
| size_type | bt_sum_base_trials | 
| The sum of the number of trials for finding bases. | |
| double | bt_avg_base_trials | 
| The average number of trials for finding bases. | |