function hermite_cubic_test03 ( ) %*****************************************************************************80 % %% HERMITE_CUBIC_TEST03 tests HERMITE_CUBIC_INTEGRATE. % % Licensing: % % This code is distributed under the GNU LGPL license. % % Modified: % % 28 January 2011 % % Author: % % John Burkardt % fprintf ( 1, '\n' ); fprintf ( 1, 'HERMITE_CUBIC_TEST03:\n' ); fprintf ( 1, ' HERMITE_CUBIC_INTEGRATE integrates a Hermite cubic\n' ); fprintf ( 1, ' polynomial from A to B.\n' ); for x_interval = 1 : 3 if ( x_interval == 1 ) x1 = 0.0; x2 = 10.0; elseif ( x_interval == 2 ) x1 = -1.0; x2 = +1.0; elseif ( x_interval == 3 ) x1 = 0.5; x2 = 0.75; end [ f1, d1, s1, t1 ] = cubic_value ( x1 ); [ f2, d2, s2, t2 ] = cubic_value ( x2 ); fprintf ( 1, '\n' ); fprintf ( 1, ' Exact Computed\n' ); fprintf ( 1, ' J A B Integral Integral\n' ); fprintf ( 1, '\n' ); a = x1 - 1.0; for j = - 3 : 12 b = ( ( 10 - j ) * x1 ... + j * x2 ) ... / 10.0; q_exact = cubic_integrate ( a, b ); q_computed = hermite_cubic_integrate ( x1, f1, d1, x2, f2, d2, a, b ); fprintf ( 1, ' %3d %10f %10f %10.6g %10.6g\n', ... j, a, b, q_exact, q_computed ); end end return end