| Brian Silverman | 72890c2 | 2015-09-19 14:37:37 -0400 | [diff] [blame^] | 1 | #include <iostream> |
| 2 | #include <Eigen/Dense> |
| 3 | |
| 4 | using namespace std; |
| 5 | using namespace Eigen; |
| 6 | |
| 7 | int main() |
| 8 | { |
| 9 | Matrix2f A, b; |
| 10 | LLT<Matrix2f> llt; |
| 11 | A << 2, -1, -1, 3; |
| 12 | b << 1, 2, 3, 1; |
| 13 | cout << "Here is the matrix A:\n" << A << endl; |
| 14 | cout << "Here is the right hand side b:\n" << b << endl; |
| 15 | cout << "Computing LLT decomposition..." << endl; |
| 16 | llt.compute(A); |
| 17 | cout << "The solution is:\n" << llt.solve(b) << endl; |
| 18 | A(1,1)++; |
| 19 | cout << "The matrix A is now:\n" << A << endl; |
| 20 | cout << "Computing LLT decomposition..." << endl; |
| 21 | llt.compute(A); |
| 22 | cout << "The solution is now:\n" << llt.solve(b) << endl; |
| 23 | } |