Tutorial_solve_reuse_decomposition.cpp (368B)
1 Matrix3f A(3,3); 2 A << 1,2,3, 4,5,6, 7,8,10; 3 PartialPivLU<Matrix3f> luOfA(A); // compute LU decomposition of A 4 Vector3f b; 5 b << 3,3,4; 6 Vector3f x; 7 x = luOfA.solve(b); 8 cout << "The solution with right-hand side (3,3,4) is:" << endl; 9 cout << x << endl; 10 b << 1,1,1; 11 x = luOfA.solve(b); 12 cout << "The solution with right-hand side (1,1,1) is:" << endl; 13 cout << x << endl;