Rheolef  7.2
an efficient C++ finite element environment
harten_error.cc
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1
21#include "rheolef.h"
22using namespace rheolef;
23using namespace std;
24#include "harten.h"
25int main(int argc, char**argv) {
26 environment rheolef (argc, argv);
27 Float err_expected = (argc > 1) ? atof(argv[1]) : 1;
28 branch even("t","u");
29 Float t=0; field uh;
30 Float err_linf_l1 = 0;
31 dout << "# t err_l1(t)" << endl;
32 while (din >> even(t,uh)) {
33 const geo& omega = uh.get_geo();
35 iopt.set_order (2*uh.get_space().degree()+1);
36 Float err_l1 = integrate (omega, fabs(uh - harten(t)), iopt);
37 err_linf_l1 = max(err_linf_l1, err_l1);
38 dout << t << " " << err_l1 << endl;
39 }
40 dout << "# err_linf_l1 = " << err_linf_l1 << endl;
41 return (err_linf_l1 <= err_expected) ? 0 : 1;
42}
see the Float page for the full documentation
see the branch 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
Definition: environment.h:121
see the integrate_option page for the full documentation
The Burgers problem: the Harten exact solution.
int main(int argc, char **argv)
Definition: harten_error.cc:25
This file is part of Rheolef.
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: harten.h:26