PK_TOPOL_fctab_deriv_dp_t

struct PK_TOPOL_fcstr_deriv_dp_s
       {
       PK_VECTOR_t du;
       PK_VECTOR_t dv;
       };
typedef struct PK_TOPOL_fcstr_deriv_dp_s
               PK_TOPOL_fcstr_deriv_dp_t;
struct PK_TOPOL_fctab_deriv_dp_s
       {
       PK_TOPOL_fcstr_deriv_dp_t *data;
       int                        length;
       };
typedef struct PK_TOPOL_fctab_deriv_dp_s  PK_TOPOL_fctab_deriv_dp_t;

Used in:

PK_TOPOL_facet_table_t

This is a support structure for PK_TOPOL_facet_2_r_t. It is an indexed table
of du and dv first derivative surface values