function negative_binomial_cdf_test ( ) %*****************************************************************************80 % %% NEGATIVE_BINOMIAL_CDF_TEST tests NEGATIVE_BINOMIAL_CDF. % % Licensing: % % This code is distributed under the GNU LGPL license. % % Modified: % % 03 April 2016 % % Author: % % John Burkardt % fprintf ( 1, '\n' ); fprintf ( 1, 'NEGATIVE_BINOMIAL_CDF_TEST\n' ); fprintf ( 1, ' NEGATIVE_BINOMIAL_CDF evaluates the Negative Binomial CDF.\n' ); fprintf ( 1, ' NEGATIVE_BINOMIAL_CDF_INV inverts the Negative Binomial CDF.\n' ); fprintf ( 1, ' NEGATIVE_BINOMIAL_PDF evaluates the Negative Binomial PDF.\n' ); a = 2; b = 0.25; if ( ~ negative_binomial_check ( a, b ) ) fprintf ( 1, '\n' ); fprintf ( 1, 'NEGATIVE_BINOMIAL_CDF_TEST - Fatal error!\n' ); fprintf ( 1, ' The parameters are not legal.\n' ); return end fprintf ( 1, '\n' ); fprintf ( 1, ' PDF parameter A = %6d\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 ] = negative_binomial_sample ( a, b, seed ); pdf = negative_binomial_pdf ( x, a, b ); cdf = negative_binomial_cdf ( x, a, b ); x2 = negative_binomial_cdf_inv ( cdf, a, b ); fprintf ( 1, ' %14d %14g %14g %14d\n', x, pdf, cdf, x2 ); end return end