@deftypefun {int} {gnutls_priority_get_cipher_suite_index} (gnutls_priority_t @var{pcache}, unsigned int @var{idx}, unsigned int * @var{sidx})
@var{pcache}: is a @code{gnutls_prioritity_t}  type.

@var{idx}: is an index number.

@var{sidx}: internal index of cipher suite to get information about.

Provides the internal ciphersuite index to be used with
@code{gnutls_cipher_suite_info()} . The index  @code{idx} provided is an
index kept at the priorities structure. It might be that a valid
priorities index does not correspond to a ciphersuite and in
that case @code{GNUTLS_E_UNKNOWN_CIPHER_SUITE}  will be returned.
Once the last available index is crossed then
@code{GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE}  will be returned.

@strong{Returns:} On success it returns @code{GNUTLS_E_SUCCESS}  (0), or a negative error value otherwise.

@strong{Since:} 3.0.9
@end deftypefun