PK_self_intersect_t   


typedef int PK_self_intersect_t;


This field can take any one of the following values.
    PK_self_intersect_unset_c : The curve/surface has not been tested
    PK_self_intersect_false_c : The curve/surface does not self intersect
    PK_self_intersect_true_c  : The curve/surface intersects itself