% -*- texinfo -*-
% @deftypefn {Function File} {} jointentropy (@var{xy})
%
% Computes the joint entropy of the given channel transition matrix.
% By definition we have @code{H(@var{x}, @var{y})} given as
% @code{H(@var{x}:@var{y}) = SUMx(SUMy(P(@var{x}, @var{y}) *
% log2(p(@var{x}, @var{y}))))}
% @end deftypefn
% @seealso{entropy, conditionalentropy}