---
title: SparseFactorizationQR
framework: accelerate
role: symbol
role_heading: Global Variable
path: accelerate/sparsefactorizationqr
---

# SparseFactorizationQR

A constant that represents QR factorization.

## Declaration

```swift
var SparseFactorizationQR: SparseFactorization_t { get }
```

## Discussion

Discussion SparseFactorizationQR provides a sparse counterpart to the dense QR routines sgeqrf() and dgeqrf() from LAPACK.

## See Also

### Factorization types for overdetermined and underdetermined systems

- [SparseFactorizationCholeskyAtA](accelerate/sparsefactorizationcholeskyata.md)