function levy_cdf_test ( ) %*****************************************************************************80 % %% LEVY_CDF_TEST tests LEVY_CDF. % % Licensing: % % This code is distributed under the GNU LGPL license. % % Modified: % % 07 April 2016 % % Author: % % John Burkardt % fprintf ( 1, '\n' ); fprintf ( 1, 'LEVY_CDF_TEST\n' ); fprintf ( 1, ' LEVY_CDF evaluates the Levy CDF;\n' ); fprintf ( 1, ' LEVY_CDF_INV inverts the Levy CDF.\n' ); fprintf ( 1, ' LEVY_PDF evaluates the Levy PDF;\n' ); a = 1.0; b = 2.0; fprintf ( 1, '\n' ); fprintf ( 1, ' PDF parameter A = %14g\n', a ); fprintf ( 1, ' PDF parameter B = %14g\n', b ); seed = 123456789; fprintf ( 1, '\n' ); fprintf ( 1, ' X PDF CDF CDF_INV\n' ); fprintf ( 1, '\n' ); for i = 1 : 10 [ x, seed ] = levy_sample ( a, b, seed ); pdf = levy_pdf ( x, a, b ); cdf = levy_cdf ( x, a, b ); x2 = levy_cdf_inv ( cdf, a, b ); fprintf ( 1, ' %14g %14g %14g %14g\n', x, pdf, cdf, x2 ); end return end