function value = runge ( x )

%*****************************************************************************80
%
%% runge evaluates the Runge function.
%
%  Input:
%
%    real x: the evaluation points.
%
%  Output:
%
%    real value: the function value at x.
%
  value = 1.0 ./ ( 1.0 + 25.0 * x.^2 );

  return
end

