Several aspects of the Intel MKL RCI ISS interface are platform-specific and language-specific. To promote portability across platforms and ease of use across different languages, include one of the Intel MKL RCI ISS language-specific header files.
The C-language header file defines these function prototypes:
void dcg_init(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dcg_check(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dcg(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dcg_get(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp, int *itercount);
void dcgmrhs_init(int *n, double *x, int *nRhs, double *b, int *method, int *rci_request, int *ipar, double dpar, double *tmp);
void dcgmrhs_check(int *n, double *x, int *nRhs, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dcgmrhs(int *n, double *x, int *nRhs, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dcgmrhs_get(int *n, double *x, int *nRhs, double *b, int *rci_request, int *ipar, double dpar, double *tmp, int *itercount);
void dfgmres_init(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dfgmres_check(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dfgmres(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp);
void dfgmres_get(int *n, double *x, double *b, int *rci_request, int *ipar, double dpar, double *tmp, int *itercount);
Note
Intel MKL does not support the RCI ISS interface unless you include the language-specific header file.