TutorialLinAlgComputeTwice.cpp
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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 }
Scalar * b
Definition: benchVecAdd.cpp:17
Namespace containing all symbols from the Eigen library.
Definition: jet.h:637
Definition: Half.h:150
const Solve< LLT, Rhs > solve(const MatrixBase< Rhs > &b) const
Definition: LLT.h:144
Standard Cholesky decomposition (LL^T) of a matrix and associated features.
Definition: LLT.h:56
LLT & compute(const EigenBase< InputType > &matrix)


gtsam
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autogenerated on Sat May 8 2021 02:51:19