@deftypefun {const char *} {gnutls_strerror} (int @var{error})
@var{error}: is a GnuTLS error code, a negative error code
This function is similar to strerror. The difference is that it
accepts an error number returned by a gnutls function; In case of
an unknown error a descriptive string is sent instead of @code{NULL} .
Error codes are always a negative error code.
@strong{Returns:} A string explaining the GnuTLS error message.
@end deftypefun