function psi = psi_corner ( X, Y )

%*****************************************************************************80
%
%% psi_corner returns the corner psi field.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    16 July 2020
%
%  Author:
%
%    John Burkardt
%
%  Input:
%
%    real X(nr,nc), Y(nr,nc): the node coordinates.
%
%  Output:
%
%    real PSI(nr,nc): the stream function values.
%
  psi = X .* Y;

  return
end

