function bc = elliptic_wavefront_bc ( xbd, ybd )

%*****************************************************************************80
%
%% ELLIPTIC_WAVEFRONT_BC evaluates the boundary conditions.
%
%  Modified:
%
%    05 November 2013
%
%  Author:
%
%    John Burkardt
%
%  Reference:
%
%    William Mitchell,
%    A collection of 2D elliptic problems for testing adaptive
%    grid refinement algorithms,
%    Applied Mathematics and Computation,
%    Volume 220, 1 September 2013, pages 350-364.
%
%  Parameters:
%
%    Input, real XBD(*), YBD(*), coordinates of points where the boundary
%    condition is to be evaluated.
%
%    Output, real BC(*), the boundary condition at those points.
%
  bc = elliptic_wavefront_exact ( xbd, ybd );

  return
end

