function cdf = normal_cdf ( x, mu, sigma )

%*****************************************************************************80
%
%% NORMAL_CDF evaluates the Normal CDF.
%
%  Licensing:
%
%    This code is distributed under the GNU LGPL license.
%
%  Modified:
%
%    17 September 2004
%
%  Author:
%
%    John Burkardt
%
%  Parameters:
%
%    Input, real X, the argument of the CDF.
%
%    Input, real MU, SIGMA, the parameters of the PDF.
%    0.0 < SIGMA.
%
%    Output, real CDF, the value of the CDF.
%
  y = ( x - mu ) / sigma;

  cdf = normal_01_cdf ( y );

  return
end
