Solves the system AX = B for X, using the supplied double-precision factorization of A, and without any internal memory allocations.
- iOS 11+
- macOS 10.13+
- Mac Catalyst 13.0+
- tvOS 11+
- watchOS 4+
Factorization of A.
The right-hand side, B.
Matrix in which to return solutions.
If the factorization is A = QR and the system is underdetermined, the solution of minimum norm ‖ X ‖₂ is returned.
If the factorization is A = QR and the system is overdetermined, the least squares solution argument minₓ ‖ AX - B ‖₂ is returned.
In the case of a factorization of type
Sparse, the factorization is in fact of AᵀA, so the solution returned is for the system AᵀAX = B.