+ n_drop = 0;
+ }
+ else if (at == CTAT_COL && a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_LAYER)
+ {
+ size_t n = nest->n_areas[at];
+ if (n > 1)
+ {
+ nest->areas[at][n - 2] = nest->areas[at][n - 1];
+ nest->n_areas[at]--;
+ }
+ n_drop = 0;
+ }
+ else if (at == CTAT_ROW && a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_LAYER)
+ {
+ size_t n = nest->n_areas[at];
+ if (n > 1)
+ {
+ nest->areas[at][n - 2] = nest->areas[at][n - 1];
+ nest->n_areas[at]--;
+ }
+ n_drop = 0;
+ }
+ else
+ {
+ bool drop_last = (at == CTAT_SUBTABLE ? a != PIVOT_AXIS_LAYER
+ : at == CTAT_ROW ? a == PIVOT_AXIS_COLUMN
+ : at == CTAT_COL ? a == PIVOT_AXIS_ROW
+ : false);
+ bool drop_additional
+ = ((t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_COLUMN && (at == CTAT_ROW || at == CTAT_LAYERROW) && a == PIVOT_AXIS_ROW)
+ || (t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_ROW && (at == CTAT_COL || at == CTAT_LAYERCOL) && a == PIVOT_AXIS_COLUMN));
+
+ n_drop = 0;
+ if (drop_last)
+ n_drop++;
+ if (drop_additional)
+ n_drop++;