---
title: pivotTolerance
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/sparsenumericfactoroptions/pivottolerance
---

# pivotTolerance

The pivot tolerance that threshold partial pivoting uses.

## Declaration

```swift
var pivotTolerance: Double
```

## Discussion

Discussion The system clamps this to range [0,0.5]. note: Only the symmetric factorization algorithms use the pivotTolerance parameter. SparseFactorizationQR  ignores the pivot tolerance value.

## See Also

### Instance Properties

- [control](accelerate/sparsenumericfactoroptions/control.md)
- [SparseControl_t](accelerate/sparsecontrol_t.md)
- [scalingMethod](accelerate/sparsenumericfactoroptions/scalingmethod.md)
- [scaling](accelerate/sparsenumericfactoroptions/scaling.md)
- [SparseScaling_t](accelerate/sparsescaling_t.md)
- [zeroTolerance](accelerate/sparsenumericfactoroptions/zerotolerance.md)