---
title: "SparseMultiply(_:_:)"
framework: accelerate
role: symbol
role_heading: Function
path: "accelerate/sparsemultiply(_:_:)-9fn7j"
---

# SparseMultiply(_:_:)

Perform the multiply operation y = Subfactor * x for complex double values, in place.

## Declaration

```swift
func SparseMultiply(_ Subfactor: SparseOpaqueSubfactor_Complex_Double, _ XY: DenseVector_Complex_Double)
```

## Parameters

- `Subfactor`: (Input) The subfactor to multiply by, as returned by SparseCreateSubfactor().

## See Also

### Subfactor and dense vector multiplication

- [SparseMultiply(_:_:)](accelerate/sparsemultiply(_:_:)-8ehhn.md)
- [SparseMultiply(_:_:)](accelerate/sparsemultiply(_:_:)-7l3sr.md)
- [SparseMultiply(_:_:_:)](accelerate/sparsemultiply(_:_:_:)-6abql.md)
- [SparseMultiply(_:_:_:)](accelerate/sparsemultiply(_:_:_:)-2h425.md)
- [SparseMultiply(_:_:)](accelerate/sparsemultiply(_:_:)-3s0hu.md)
- [SparseMultiply(_:_:_:)](accelerate/sparsemultiply(_:_:_:)-4fwfv.md)
- [SparseMultiply(_:_:_:)](accelerate/sparsemultiply(_:_:_:)-58wuo.md)
- [SparseMultiply(_:_:_:)](accelerate/sparsemultiply(_:_:_:)-6wrnf.md)