<s>[INST] return the quadrant of a block of equal size that is adjacent to the given side of this quadrant . concode_field_sep PlaceHolder placeHolder concode_field_sep boolean adjacent concode_elem_sep QuadTreeNode child [/INST] Quadrant function ( int arg0 ) { if ( arg0 == QuadTreeNode . WEST || arg0 == QuadTreeNode . EAST ) { return cSouthEast ; } return cNorthWest ; </s>