#include <db.h>

int
DB->get_h_nelem(DB *db, u_int32_t *h_nelemp);  

The DB->get_h_nelem() method returns the estimate of the final size of the hash table as set by the DB->set_h_nelem() method.

The DB->get_h_nelem() method may be called at any time during the life of the application.

The DB->get_h_nelem() method returns a non-zero error value on failure and 0 on success.