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