docs: private void init_storage_parameters()
      {
          first_quick_size_block = first_quick_size * grain_size;
          last_quick_size_block = last_quick_size * grain_size;
          last_ql_index = last_quick_size + 1 - first_quick_size;
          ql_heads = new Listhead[last_ql_index + 1];
      }