@deftypefun {int} {gnutls_x509_crt_set_tlsfeatures} (gnutls_x509_crt_t @var{crt}, gnutls_x509_tlsfeatures_t @var{features})

@var{crt}: A X.509 certificate

@var{features}: If the function succeeds, the

features will be added to the certificate.

This function will set the certificates

X.509 TLS extension from the given structure.

@strong{Returns:} On success, @code{GNUTLS_E_SUCCESS}  (0) is returned,

otherwise a negative error value.

@strong{Since:} 3.5.1

@end deftypefun