function box_distance_pdf ( a, b, c )

%*****************************************************************************80
%
%% box_distance_pdf() plots the PDF for the box distance problem.
%
%  THIS FUNCTION HAS NOT BEEN PROPERLY DEFINED YET!
%
%  Discussion:
%
%    The box has sides of length a <= b <= c.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    19 May 2023
%
%  Author:
%
%    John Burkardt
%
%  Input:
%
%    real a, b, c: the length of the sides.
%
  d = linspace ( 0.0, sqrt ( a^2 + b^2 + c^2 ), 101 );

  pdf = ?

  plot ( d, pdf, 'r-', 'linewidth', 2 );
  grid ( 'on' );
  xlabel ( '<-- Distance -->' );
  ylabel ( '<-- Probability -->' );
  title ( 'PDF for distance between pairs of random points in box' );

  return
end

