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Polyhedron/external/eigen-3.4.0/doc/snippets/Tutorial_solve_reuse_decomposition.cpp
Efim Beshmenev 7f9dc067a1 Initial commit
2026-07-10 19:16:42 +03:00

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C++

Matrix3f A(3,3);
A << 1,2,3, 4,5,6, 7,8,10;
PartialPivLU<Matrix3f> luOfA(A); // compute LU decomposition of A
Vector3f b;
b << 3,3,4;
Vector3f x;
x = luOfA.solve(b);
cout << "The solution with right-hand side (3,3,4) is:" << endl;
cout << x << endl;
b << 1,1,1;
x = luOfA.solve(b);
cout << "The solution with right-hand side (1,1,1) is:" << endl;
cout << x << endl;