C++使用Eigen库如何求解非方阵的广义逆矩阵？类似matlab的pinv函数

x = A.ldlt().solve(b)); // A sym. p.s.d. #include
x = A.llt() .solve(b)); // A sym. p.d. #include
x = A.lu() .solve(b)); // Stable and fast. #include
x = A.qr() .solve(b)); // No pivoting. #include
x = A.svd() .solve(b)); // Stable, slowest. #include
// .ldlt() -> .matrixL() and .matrixD()
// .llt() -> .matrixL()
// .lu() -> .matrixL() and .matrixU()
// .qr() -> .matrixQ() and .matrixR()
// .svd() -> .matrixU(), .singularValues(), and .matrixV()