function value = pyramid_unit_volume ( )

%*****************************************************************************80
%
%% pyramid_unit_volume() returns the volume of a unit pyramid.
%
%  Discussion:
%
%    The unit pyramid with square base is the region
%
%      -1 <= X <= 1
%      -1 <= Y <= 1
%       0 <= Z <= 1.
%
%  Licensing:
%
%    This code is distributed under the MIT license. 
%
%  Modified:
%
%    31 March 2008
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real VALUE, the volume of the pyramid.
%
  value = 4.0 / 3.0;

  return
end
