Eigen provides a rank-revealing LU decomposition, which provides an isInvertible
member function.
See
Question
When computing the inverse of a matrix in Eigen it is up to the user to check if this can be done:
This matrix must be invertible, otherwise the result is undefined.
but how can I check for this condition in Eigen?
Solution
Eigen provides a rank-revealing LU decomposition, which provides an isInvertible
member function.
See
OTHER TIPS
There are plenty of other properties of matrices that hold only for invertible matrices. You can check one of those to see if the matrix is invertible.
One possibility is to check if the determinant is 0
. Iff so, the matrix is not invertible.