<!--
{
  "availability" : [
    "iOS: 18.5.0 -",
    "iPadOS: 18.5.0 -",
    "macCatalyst: 18.5.0 -",
    "macOS: 15.5.0 -",
    "tvOS: 18.5.0 -",
    "visionOS: 2.5.0 -",
    "watchOS: 11.5.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Accelerate",
  "identifier" : "/documentation/Accelerate/SparseMultiply(_:_:_:)-6wrnf",
  "metadataVersion" : "0.1.0",
  "role" : "Function",
  "symbol" : {
    "kind" : "Function",
    "modules" : [
      "Accelerate"
    ],
    "preciseIdentifier" : "c:@F@SparseMultiply#$@SA@SparseOpaqueSubfactor_Complex_Float#$@SA@DenseMatrix_Complex_Float#S1_#"
  },
  "title" : "SparseMultiply(_:_:_:)"
}
-->

# SparseMultiply(_:_:_:)

Perform the multiply operation `Y = Subfactor * X` for complex float values.

```
func SparseMultiply(_ Subfactor: SparseOpaqueSubfactor_Complex_Float, _ X: DenseMatrix_Complex_Float, _ Y: DenseMatrix_Complex_Float)
```

## Parameters

`Subfactor`

(input) The subfactor to multiply by, as returned by
`SparseCreateSubfactor()`.

`X`

(input) The right-hand side vectors `X`. If `Subfactor` is `m x n`, then `X`
must have dimension `n x nrhs`, where nrhs is the number of right-hand
side vectors.

`Y`

(output) The result vectors `Y`. If `Subfactor` is `m x n`, and `X` is
`m x nrhs`, then `Y` must have dimension `m x nrhs`.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)