# makeDFTSetup(previous:count:direction:transformType:) ``` static func makeDFTSetup(previous: vDSP.DFT?, count: Int, direction: vDSP.FourierTransformDirection, transformType: vDSP.DFTTransformType) -> OpaquePointer? where T : vDSP_FloatingPointDiscreteFourierTransformable ``` --- 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)