PK_TOPOL_fctab_data_deriv_t

struct PK_TOPOL_fctab_data_deriv_s
        {
        int  *deriv;
        int   length;
        };
 typedef struct PK_TOPOL_fctab_data_deriv_s
                PK_TOPOL_fctab_data_deriv_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
which maps data indices into a table of 'deriv' indices.  The 'deriv' indices
can be used to reference the 'deriv_dp' and 'deriv_d2p' tables.

For more details see associating fins with facet geometry.