Rheolef  7.2
an efficient C++ finite element environment
 
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sinusprod_error_hho_reconstruction.cc
Go to the documentation of this file.
1
25#include "rheolef.h"
26using namespace rheolef;
27using namespace std;
28#include "sinusprod.h"
29#include "sinusprod_grad.h"
30int main(int argc, char**argv) {
31 environment rheolef (argc, argv);
32 Float err_us_s_h1_expected = (argc > 1) ? atof(argv[1]) : 1e+38;
33 field uhs;
34 din >> uhs;
35 geo omega = uhs.get_geo();
36 space Xhs = uhs.get_space();
37 size_t d = omega.dimension(), kp1 = Xhs.degree();
39 iopt.invert = true;
40 iopt.set_order (2*kp1+2);
41 Float err_us_l2 = sqrt(integrate(omega, sqr(uhs-u_exact(d)), iopt)),
42 err_us_h1 = sqrt(integrate(omega, norm2(grad_h(uhs)-grad_u(d)), iopt));
43 derr << "err_us_l2 = " << err_us_l2 << endl
44 << "err_us_h1 = " << err_us_h1 << endl;
45#ifdef TODO
46 // on_local_sides in non-variational exprs:
47 Float err_us_s_l2 = sqrt(integrate(omega, on_local_sides(sqr(uhs-u_exact(d))), iopt)),
48 err_us_s_h1 = sqrt(integrate(omega, on_local_sides(norm2(grad_h(uhs)-grad_u(d))), iopt));
49 derr << "err_us_s_l2 = " << err_us_s_l2 << endl
50 << "err_us_s_h1 = " << err_us_s_h1 << endl;
51#endif // TODO
52 return (err_us_h1 < err_us_s_h1_expected) ? 0 : 1;
53}
see the Float page for the full documentation
see the field page for the full documentation
see the geo page for the full documentation
see the environment page for the full documentation
see the integrate_option page for the full documentation
see the space page for the full documentation
int main()
Definition field2bb.cc:58
This file is part of Rheolef.
T norm2(const vec< T, M > &x)
norm2(x): see the expression page for the full documentation
Definition vec.h:379
std::enable_if< details::has_field_rdof_interface< Expr >::value, details::field_expr_v2_nonlinear_terminal_field< typenameExpr::scalar_type, typenameExpr::memory_type, details::differentiate_option::gradient > >::type grad_h(const Expr &expr)
grad_h(uh): see the expression page for the full documentation
std::enable_if< details::is_field_expr_v2_nonlinear_arg< Expr >::value &&!is_undeterminated< Result >::value, Result >::type integrate(const geo_basic< T, M > &omega, const Expr &expr, const integrate_option &iopt, Result dummy=Result())
see the integrate page for the full documentation
Definition integrate.h:211
std::enable_if< details::is_field_expr_v2_variational_arg< Expr >::value, details::field_expr_quadrature_on_sides< Expr > >::type on_local_sides(const Expr &expr)
on_local_sides(expr): see the expression page for the full documentation
STL namespace.
rheolef - reference manual
The sinus product function.
The sinus product function – its gradient.