---
title: type
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/sparseopaquepreconditioner_double/type
---

# type

The preconditioner type.

## Declaration

```swift
var type: SparsePreconditioner_t
```

## See Also

### Inspecting Preconditioner Properties

- [apply](accelerate/sparseopaquepreconditioner_double/apply.md)
- [mem](accelerate/sparseopaquepreconditioner_double/mem.md)