Rheolef  7.2
an efficient C++ finite element environment
robin2_lazy.cc
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1
25#include "rheolef.h"
26using namespace rheolef;
27using namespace std;
28#include "sinusprod_laplace.h"
29int main(int argc, char**argv) {
30 environment rheolef(argc, argv);
31 geo omega (argv[1]);
32 size_t d = omega.dimension();
33 space Xh (omega, argv[2]);
34 trial u (Xh); test v (Xh);
35 form a = integrate (dot(grad(u),grad(v))) + integrate ("boundary", u*v);
36#undef BUG
37#ifdef BUG
38 field lh = lazy_integrate (f(d)*v) + lazy_integrate ("boundary", g(d)*v);
39#else // !BUG
40 field lh = integrate (f(d)*v) + lazy_integrate ("boundary", g(d)*v);
41#endif // !BUG
42 field uh (Xh);
43 problem p (a);
44 p.solve (lh, uh);
45 dout << uh;
46}
u_exact g
field lh(Float epsilon, Float t, const test &v)
see the field page for the full documentation
see the form page for the full documentation
see the geo page for the full documentation
see the problem page for the full documentation
see the environment page for the full documentation
Definition: environment.h:121
see the space page for the full documentation
see the test page for the full documentation
see the test page for the full documentation
point u(const point &x)
rheolef::details::is_vec dot
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::gradient > >::type grad(const Expr &expr)
grad(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_quadrature_arg< Expr >::value, details::field_lazy_terminal_integrate< Expr > >::type lazy_integrate(const typename Expr::geo_type &domain, const Expr &expr, const integrate_option &iopt=integrate_option())
see the integrate page for the full documentation
STL namespace.
rheolef - reference manual
int main(int argc, char **argv)
Definition: robin2_lazy.cc:29
The sinus product function – right-hand-side and boundary condition for the Poisson problem with Neum...
Definition: sphere.icc:25
Definition: leveque.h:25