int n = 10000; | |
VectorXd x(n), b(n); | |
SparseMatrix<double> A(n, n); | |
/* ... fill A and b ... */ | |
BiCGSTAB<SparseMatrix<double> > solver(A); | |
// start from a random solution | |
x = VectorXd::Random(n); | |
solver.setMaxIterations(1); | |
int i = 0; | |
do { | |
x = solver.solveWithGuess(b, x); | |
std::cout << i << " : " << solver.error() << std::endl; | |
++i; | |
} while (solver.info() != Success && i < 100); |