int function ( ) { return l ; }
returns the number of points in lower hull concode_field_sep int u concode_elem_sep int[] lowerHull concode_elem_sep int[] upperHull concode_elem_sep int l concode_field_sep int getNumberOfPointsInUpperHull concode_elem_sep int[] getUpperHull concode_elem_sep int[] getLowerHull concode_elem_sep void determineLowerAndUpperHull