int
main()
{
DenseVector sings;
GeMat deltas(3,2);
std::vector<GeMat> _deltas;
Function x2f(x2, sings);
Function onef(one, sings);
Function x3f(x3, sings);
Function cosf(mycos, sings);
Function sinf(mysin, sings);
Function expf(myexp, sings);
Basis basis(4);
basis.template enforceBoundaryCondition<lawa::DirichletBC>();
IndexSet indexset;
Coeff1D coeff;
std::vector<Function> fvec;
int rank = 2;
int dim = 64;
for (int i=1; i<=32; ++i) {
fvec.push_back(cosf);
fvec.push_back(onef);
fvec.push_back(x2f);
fvec.push_back(onef);
}
SepCoeff coeffs(rank, dim);
IndexSetVec indexsetvec(dim);
lawa::SeparableFunctionD<T> F(fvec, rank, dim);
MatInt derivs(rank, dim);
for (int i=1; i<=rank; ++i) {
for (int j=1; j<=dim; ++j) {
derivs(i,j) = 0;
_deltas.push_back(deltas);
}
}
lawa::SeparableRHSD<T, Basis> Fint(basis, F, _deltas, derivs);
getFullIndexSet(basis, indexset, 2);
std::cout << "The index set size is\n" << indexset.size()
<< std::endl;
for (int l=0; (unsigned)l<indexsetvec.size(); ++l) {
indexsetvec[l] = indexset;
}
/* Map */
lawa::Mapwavind<Index1D> map(dim);
map.rehash(50);
genCoefficients(coeffs, Fint, indexsetvec);
lawa::HTCoefficients<T, Basis> f(dim, basis, map);
lawa::HTCoefficients<T, Basis> u(dim, basis, map);
lawa::HTCoefficients<T, Basis> r(dim, basis, map);
Laplace1D LaplaceBil(basis);
RefLaplace1D RefLaplaceBil(basis.refinementbasis);
Identity1D IdentityBil(basis);
RefIdentity1D RefIdentityBil(basis.refinementbasis);
LOp_Lapl1D lapl(basis, basis, RefLaplaceBil, LaplaceBil);
Sepop A(lapl, dim, dim);
lawa::Sepdiagscal<Basis> S(dim, basis);
setScaling(S, 0.5);
lawa::HTAWGM_Params params;
params.maxit_pcg = 100;
params.maxit_awgm = 100;
params.tol_awgm = 1e-08;
params.delta1_pcg = 1e-01;
params.delta2_pcg = 1e-01;
params.delta3_pcg = 1e-01;
params.alpha = 0.95;
params.recompr = 1e-02;
params.gamma = 0.1;
params.theta = 1e-08;
std::cout << "HTAWGM params =\n";
std::cout << params << std::endl;
unsigned its;
double res;
its = htawgm(A, S, u, Fint, indexsetvec, res, params);
std::cout << "htawgm took " << its << " iterations to reach "
<< res << " accuracy" << std::endl;
std::cout << "Final scaling set to\n" << S << std::endl;
return 0;
}
vixl::FPRegister D(Vreg r) {
return x2f(r);
}