---
title: SparsePreconditionerNone
framework: accelerate
role: symbol
role_heading: Global Variable
path: accelerate/sparsepreconditionernone
---

# SparsePreconditionerNone

No preconditioner.

## Declaration

```swift
var SparsePreconditionerNone: SparsePreconditioner_t { get }
```

## See Also

### Constants

- [SparsePreconditionerDiagScaling](accelerate/sparsepreconditionerdiagscaling.md)
- [SparsePreconditionerDiagonal](accelerate/sparsepreconditionerdiagonal.md)
- [SparsePreconditionerUser](accelerate/sparsepreconditioneruser.md)