and
normsΒΆThe file getfem/getfem_assembling.h defines the functions to compute
and
norms of a solution. The following functions compute
the different norms:
getfem::asm_L2_norm(mim, mf, U);
getfem::asm_H1_semi_norm(mim, mf, U);
getfem::asm_H1_norm(mim, mf, U);
where mim is a getfem::mesh_im used for the integration, mf is a getfem::mesh_fem and describes the finite element method on which the solution is defined, U is the vector of values of the solution on each degree of freedom of mf. The size of U should be mf.nb_dof().
In order to compare two solutions, it is often simpler and faster to use the following function than to interpolate one mesh_fem on another:
getfem::asm_L2_dist(mim, mf1, U1, mf2, U2);
getfem::asm_H1_dist(mim, mf1, U1, mf2, U2);
These functions return the
and
norms of
.