@deftypefun {int} {gnutls_x509_tlsfeatures_init} (gnutls_x509_tlsfeatures_t * @var{f})
@var{f}: The TLS features

This function will initialize a X.509 TLS features extension structure

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

@strong{Since:} 3.5.1
@end deftypefun