@deftypefun {unsigned} {gnutls_hash_get_len} (gnutls_digest_algorithm_t @var{algorithm})
@var{algorithm}: the hash algorithm to use

This function will return the length of the output data
of the given hash algorithm.

@strong{Returns:} The length or zero on error.

@strong{Since:} 2.10.0
@end deftypefun