---
title: "SparseSolve(_:_:_:_:)"
framework: accelerate
role: symbol
role_heading: Function
path: "accelerate/sparsesolve(_:_:_:_:)-2p6e3"
---

# SparseSolve(_:_:_:_:)

Solves the equation Subfactor * X = B for the vector of single-precision values X, without any internal memory allocations.

## Declaration

```swift
func SparseSolve(_ Subfactor: SparseOpaqueSubfactor_Float, _ B: DenseVector_Float, _ X: DenseVector_Float, _ workspace: UnsafeMutableRawPointer)
```

## Parameters

- `Subfactor`: The Subfactor in Subfactor * X = B that doc://com.apple.accelerate/documentation/Accelerate/SparseCreateSubfactor(_:_:)-49d8w returns.
- `B`: The vector B.
- `X`: The vector X.
- `workspace`: A workspace of size workspaceRequiredStatic + workspaceRequiredPerRHS.

## See Also

### Vector-solving functions with user-defined workspace

- [SparseSolve(_:_:_:)](accelerate/sparsesolve(_:_:_:)-7auge.md)
- [SparseSolve(_:_:_:)](accelerate/sparsesolve(_:_:_:)-1xw9b.md)
- [SparseSolve(_:_:_:_:)](accelerate/sparsesolve(_:_:_:_:)-eaq9.md)