an efficient C++ finite element environment
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The cosinus product function – post-treatment with the discontinuous Galerkin method
int main(
int argc,
char**argv) {
space Xh = uh.get_space();
geo omega = Xh.get_geo();
size_t k = Xh.degree();
size_t d = omega.dimension();
Vh.block("boundary");
Float err_star_linf = eh_star.max_abs();
Float eta_linf = eta_h.max_abs();
space G0h (omega,
"P0",
"vector");
space G1h (omega,
"P1",
"vector");
G1h.block("boundary");
field grad_eh_p1 (G1h, 0);
pm1v.solve(l1h, grad_eh_p1);
field grad_eta_h_p1 (G1h, 0);
pm1v.solve(l2h, grad_eta_h_p1);
derr <<
"err_l2 = " << err_l2 << endl
<< "eta_l2 = " << eta_l2 << endl
<< "err_star_l2 = " << err_star_l2 << endl
<< "err_linf = " << err_linf << endl
<< "eta_linf = " << eta_linf << endl
<< "err_star_linf = " << err_star_linf << endl
<< "err_h1 = " << err_h1 << endl
<< "eta_h1 = " << eta_h1 << endl
<< "err_star_h1 = " << err_star_h1 << endl;
;
}
see the catchmark page for the full documentation
rheolef::std enable_if ::type dot const Expr1 expr1, const Expr2 expr2 dot(const Expr1 &expr1, const Expr2 &expr2)
dot(x,y): see the expression page for the full documentation
see the field 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
see the space page for the full documentation
std::enable_if< details::is_field_convertible< Expr >::value,details::field_expr_v2_nonlinear_terminal_field< typename Expr::scalar_type,typename Expr::memory_type,details::differentiate_option::gradient >>::type grad(const Expr &expr)
grad(uh): see the expression page for the full documentation
The cosinus product function.
rheolef - reference manual
T norm2(const vec< T, M > &x)
norm2(x): see the expression page for the full documentation
see the integrate_option page for the full documentation
field_basic< T, M > interpolate(const space_basic< T, M > &V2h, const field_basic< T, M > &u1h)
see the interpolate page for the full documentation
idiststream din
see the diststream page for the full documentation
see the environment page for the full documentation
field lh(Float epsilon, Float t, const test &v)
This file is part of Rheolef.
see the test page for the full documentation
see the problem page for the full documentation
odiststream derr(cerr)
see the diststream page for the full documentation
see the Float page for the full documentation
The cosinus product function – its gradient.
void set_family(family_type type)
int main(int argc, char **argv)
std::enable_if< details::is_field_convertible< Expr >::value,details::field_expr_v2_nonlinear_terminal_field< typename Expr::scalar_type,typename Expr::memory_type,details::differentiate_option::gradient >>::type grad_h(const Expr &expr)
grad_h(uh): see the expression page for the full documentation
see the test page for the full documentation
odiststream dout(cout)
see the diststream page for the full documentation
std::string itos(std::string::size_type i)
itos: see the rheostream page for the full documentation
see the geo page for the full documentation