---
title: Subfactor Functions
framework: accelerate
role: collectionGroup
role_heading: API Collection
path: accelerate/subfactor-functions
---

# Subfactor Functions

Extract and work with subfactors.

## Topics

### Subfactor Extraction

- [SparseSubfactor_t](accelerate/sparsesubfactor_t.md)
- [SparseCreateSubfactor(_:_:)](accelerate/sparsecreatesubfactor(_:_:)-49d8w.md)
- [SparseOpaqueFactorization_Double](accelerate/sparseopaquefactorization_double.md)
- [SparseCreateSubfactor(_:_:)](accelerate/sparsecreatesubfactor(_:_:)-4renf.md)
- [SparseOpaqueFactorization_Float](accelerate/sparseopaquefactorization_float.md)
- [SparseCreateSubfactor(_:_:)](accelerate/sparsecreatesubfactor(_:_:)-39487.md)
- [SparseCreateSubfactor(_:_:)](accelerate/sparsecreatesubfactor(_:_:)-udwd.md)

### Structures

- [SparseOpaqueSubfactor_Double](accelerate/sparseopaquesubfactor_double.md)
- [SparseOpaqueSubfactor_Float](accelerate/sparseopaquesubfactor_float.md)
- [SparseOpaqueSubfactor_Complex_Double](accelerate/sparseopaquesubfactor_complex_double.md)
- [SparseOpaqueSubfactor_Complex_Float](accelerate/sparseopaquesubfactor_complex_float.md)

### Subfactor Solve and Operation Functions

- [Subfactor Solve Functions](accelerate/subfactor-solve-functions.md)
- [Subfactor Multiplication Functions](accelerate/subfactor-multiplication-functions.md)

## See Also

### Solving systems with direct sparse methods

- [Solving systems using direct methods](accelerate/solving-systems-using-direct-methods.md)
- [SparseOpaqueFactorization_Double](accelerate/sparseopaquefactorization_double.md)
- [SparseOpaqueFactorization_Float](accelerate/sparseopaquefactorization_float.md)
- [SparseOpaqueFactorization_Complex_Double](accelerate/sparseopaquefactorization_complex_double.md)
- [SparseOpaqueFactorization_Complex_Float](accelerate/sparseopaquefactorization_complex_float.md)
- [Sparse Matrix Factor Functions](accelerate/sparse-matrix-factor-functions.md)
- [Sparse Direct Solving Functions (Matrix RHS)](accelerate/sparse-direct-solving-functions-matrix-rhs.md)
- [Sparse Direct Solving Functions (Vector RHS)](accelerate/sparse-direct-solving-functions-vector-rhs.md)
- [Sparse Symbolic Factorization Functions](accelerate/sparse-symbolic-factorization-functions.md)
- [Sparse Refactor Functions](accelerate/sparse-refactor-functions.md)