function triangle_cdf_test ( ) %*****************************************************************************80 % %% TRIANGLE_CDF_TEST tests TRIANGLE_CDF. % % Licensing: % % This code is distributed under the GNU LGPL license. % % Modified: % % 14 February 2003 % % Author: % % John Burkardt % fprintf ( 1, '\n' ); fprintf ( 1, 'TRIANGLE_CDF_TEST\n' ); fprintf ( 1, ' TRIANGLE_CDF evaluates the Triangle CDF;\n' ); fprintf ( 1, ' TRIANGLE_CDF_INV inverts the Triangle CDF.\n' ); fprintf ( 1, ' TRIANGLE_PDF evaluates the Triangle PDF;\n' ); a = 1.0; b = 3.0; c = 10.0; seed = 123456789; fprintf ( 1, '\n' ); fprintf ( 1, ' PDF parameter A = %14g\n', a ); fprintf ( 1, ' PDF parameter B = %14g\n', b ); fprintf ( 1, ' PDF parameter C = %14g\n', c ); check = triangle_check ( a, b, c ); if ( ~ check ); fprintf ( 1, '\n' ); fprintf ( 1, 'TRIANGLE_CDF_TEST - Fatal error!\n' ); fprintf ( 1, ' The parameters are not legal.\n' ); return end fprintf ( 1, '\n' ); fprintf ( 1, ' X PDF CDF CDF_INV\n' ); fprintf ( 1, '\n' ); for i = 1 : 10 [ x, seed ] = triangle_sample ( a, b, c, seed ); pdf = triangle_pdf ( x, a, b, c ); cdf = triangle_cdf ( x, a, b, c ); x2 = triangle_cdf_inv ( cdf, a, b, c ); fprintf ( 1, ' %14g %14g %14g %14g\n', x, pdf, cdf, x2 ); end return end