function r8_abs_test ( )

%*****************************************************************************80
%
%% r8_abs_test() tests r8_abs().
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    18 August 2010
%
%  Author:
%
%    John Burkardt
%
  r8_hi = 5.0;
  r8_lo = -3.0;
  test_num = 10;

  fprintf ( 1, '\n' );
  fprintf ( 1, 'r8_abs_test\n' );
  fprintf ( 1, '  r8_abs returns the absolute value of an R8.\n' );
  fprintf ( 1, '\n' );
  fprintf ( 1, '      X         R8_ABS(X)\n' );
  fprintf ( 1, '\n' );

  for test = 1 : test_num
    r8 = r8_lo + ( r8_hi - r8_lo ) * rand ( 1, 1 );
    r8_absolute = r8_abs ( r8 );
    fprintf ( 1, '  %10.6f  %10.6f\n', r8, r8_absolute );
  end

  return
end
