@deftypefun {int} {gnutls_hash_fast} (gnutls_digest_algorithm_t @var{algorithm}, const void * @var{ptext}, size_t @var{ptext_len}, void * @var{digest})
@var{algorithm}: the hash algorithm to use

@var{ptext}: the data to hash

@var{ptext_len}: the length of data to hash

@var{digest}: is the output value of the hash

This convenience function will hash the given data and return output
on a single call.

@strong{Returns:} Zero or a negative error code on error.

@strong{Since:} 2.10.0
@end deftypefun