function value = triangle_unit_volume ( )

%*****************************************************************************80
%
%% TRIANGLE_UNIT_VOLUME: volume of a unit triangle.
%
%  Discussion:
%
%    The integration region is:
%
%      0 <= X
%      0 <= Y
%      X + Y <= 1.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    22 March 2008
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Output, real TRIANGLE_UNIT_VOLUME, the volume.
%
  value = 0.5;

  return value
end
