function prob_test0105 ( ) %*****************************************************************************80 % %% TEST0105 tests BESSEL_I0, BESSEL_I0_VALUES. % % Licensing: % % This code is distributed under the GNU LGPL license. % % Modified: % % 15 April 2009 % % Author: % % John Burkardt % fprintf ( 1, '\n' ); fprintf ( 1, 'TEST0105:\n' ); fprintf ( 1, ' BESSEL_I0 evaluates the Bessel function I0(X);\n' ); fprintf ( 1, ' BESSEL_I0_VALUES returns some exact values.\n' ); fprintf ( 1, '\n' ); fprintf ( 1, ' X Exact F I0(X)\n' ); fprintf ( 1, '\n' ); n_data = 0; while ( 1 ) [ n_data, x, fx ] = bessel_i0_values ( n_data ); if ( n_data == 0 ); break end fx2 = bessel_i0 ( x ); fprintf ( 1, ' %8f %14f %14f\n', x, fx, fx2 ); end return end