Rheolef  7.2
an efficient C++ finite element environment
 
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cosinusprod_error_hdg_post_rt.cc
Go to the documentation of this file.
1
25#include "rheolef.h"
26using namespace rheolef;
27using namespace std;
29#include "cosinusprod_grad.h"
30int main(int argc, char**argv) {
31 environment rheolef(argc, argv);
32 Float err_linf_expected = (argc > 1) ? atof(argv[1]) : 1e+38;
33 field sigmat_h;
34 din >> catchmark("sigmat") >> sigmat_h;
35 space Tth = sigmat_h.get_space();
36 geo omega = Tth.get_geo();
37 size_t k = Tth.degree() - 1;
38 size_t d = omega.dimension();
41 iopt.set_order(2*(k+1)+2);
42 Float err_sigmat_l2 = sqrt(integrate (omega, norm2(sigmat_h-grad_u(d)), iopt));
43 space Th1 (omega, "P"+to_string(k+1)+"d", "vector");
44 field esth = lazy_interpolate (Th1, sigmat_h-grad_u(d));
45 Float err_sigmat_linf = esth.max_abs();
46 derr << "err_sigmat_l2 = " << err_sigmat_l2 << endl
47 << "err_sigmat_linf = " << err_sigmat_linf << endl;
48 Float err_div_sigmat_l2 = sqrt(integrate (omega, sqr(div_h(sigmat_h)+f(d)), iopt));
49 space Lh1 (omega, "P"+to_string(k+2)+"d");
50 field edsth = lazy_interpolate (Lh1, div_h(sigmat_h)+f(d));
51 Float err_div_sigmat_linf = edsth.max_abs();
52 derr << "err_div_sigmat_l2 = " << err_div_sigmat_l2 << endl
53 << "err_div_sigmat_linf = " << err_div_sigmat_linf << endl;
54 return (err_sigmat_linf <= err_linf_expected) ? 0 : 1;
55}
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 catchmark page for the full documentation
Definition catchmark.h:67
see the environment page for the full documentation
see the integrate_option page for the full documentation
void set_family(family_type type)
see the space page for the full documentation
The cosinus product function – right-hand-side and boundary condition for the Poisson problem.
The cosinus product function – its gradient.
int main()
Definition field2bb.cc:58
This file is part of Rheolef.
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::divergence > >::type div_h(const Expr &expr)
div_h(uh): see the expression page for the full documentation
field_basic< T, M > lazy_interpolate(const space_basic< T, M > &X2h, const field_basic< T, M > &u1h)
see the interpolate page for the full documentation
Definition field.h:871
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::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
STL namespace.
rheolef - reference manual
Definition cavity_dg.h:29