- size_t n_drop = (a == PIVOT_AXIS_LAYER ? 0
- : a == PIVOT_AXIS_COLUMN ? 2
- : 0);
- for (size_t i = 0; i < n_drop; i++)
- if (nest->n_areas[at] > 0)
- nest->n_areas[at]--;
- continue;
+ case CTAT_SUBTABLE:
+ if (t->clabels_from_axis == PIVOT_AXIS_LAYER)
+ n_drop = a != PIVOT_AXIS_LAYER;
+ else if (t->clabels_to_axis != PIVOT_AXIS_LAYER)
+ n_drop = a == t->clabels_from_axis ? 2 : 0;
+ else if (a == t->clabels_from_axis)
+ n_drop = -1;
+ else
+ n_drop = a != PIVOT_AXIS_LAYER;
+ break;
+
+ case CTAT_LAYERROW:
+ case CTAT_LAYERCOL:
+ n_drop = a == ata && t->label_axis[ata] == atb;
+ break;
+
+ case CTAT_ROW:
+ case CTAT_COL:
+ if (a == ata)
+ n_drop = t->label_axis[ata] == atb;
+ else if (a != atb)
+ n_drop = 0;
+ else if (t->clabels_from_axis == atb)
+ n_drop = -1;
+ else if (t->clabels_to_axis != atb)
+ n_drop = 1;
+ else
+ n_drop = 0;
+ break;
+
+ case CTAT_LAYER:
+ case CTAT_TABLE:
+ n_drop = 0;
+ break;