---
title: "SparseRetain(_:)"
framework: accelerate
role: symbol
role_heading: Function
path: "accelerate/sparseretain(_:)-92v4w"
---

# SparseRetain(_:)

Increase reference count on a numeric factorization object, returning a copy.

## Declaration

```swift
func SparseRetain(_ NumericFactor: SparseOpaqueFactorization_Complex_Float) -> SparseOpaqueFactorization_Complex_Float
```

## Parameters

- `NumericFactor`: The symbolic factorization to increase the underlying reference count of.

## Return Value

Return Value A copy of NumericFactor.

## See Also

### Resource Retention

- [SparseRetain(_:)](accelerate/sparseretain(_:)-8r2dm.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-8943y.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-7onhr.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-2pmdl.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-6mr6d.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-5sahb.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-6pp40.md)
- [SparseRetain(_:)](accelerate/sparseretain(_:)-92857.md)