- {
- drop_inner = a == t->clabels_from_axis;
- n_drop = a != t->clabels_from_axis && a != PIVOT_AXIS_LAYER;
- }
- }
- else if (at == CTAT_ROW && a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_COLUMN)
- n_drop = 0;
- else if (at == CTAT_ROW && a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_ROW)
- {
- drop_inner = true;
- n_drop = 0;
- }
- else if (at == CTAT_ROW && a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_LAYER)
- {
- drop_inner = true;
- n_drop = 0;
- }
- else if (at == CTAT_COL && a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_COLUMN)
- {
- drop_inner = true;
- n_drop = 0;
- }
- else if (at == CTAT_COL && a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_ROW)
- n_drop = 0;
- else if (at == CTAT_COL && a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_LAYER)
- {
- drop_inner = true;
- n_drop = 0;
- }
- else if (at == CTAT_LAYERROW)
- n_drop = a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_COLUMN;
- else if (at == CTAT_LAYERCOL)
- n_drop = a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_ROW;
- 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: