# AccelerateMutableMatrixBuffer ``` protocol AccelerateMutableMatrixBuffer : AccelerateMatrixBuffer ``` ## Topics ### Instance Methods [`func withUnsafeMutableBufferPointer((inout UnsafeMutableBufferPointer) throws -> R) rethrows -> R`](/documentation/Accelerate/AccelerateMutableMatrixBuffer/withUnsafeMutableBufferPointer(_:)) ## Relationships ### Inherits From [`AccelerateMatrixBuffer`](/documentation/Accelerate/AccelerateMatrixBuffer) ### Conforming Types [`PixelBuffer`](/documentation/Accelerate/vImage/PixelBuffer) --- Copyright © 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)