# vDSP_DFT_Interleaved_Execute(_:_:_:) Calculates the single-precision discrete Fourier transform (DFT) for a vector of interleaved complex values. ``` func vDSP_DFT_Interleaved_Execute(_ Setup: vDSP_DFT_Interleaved_Setup, _ Iri: UnsafePointer, _ Ori: UnsafeMutablePointer) ``` ## Parameters `Setup` The DFT setup structure for this transform. `Iri` A single-precision vector that contains the input values. `Ori` A single-precision vector that contains the output values. The output can equal the input, but this function doesn’t support any other overlap of the input and output vectors. ## Discussion This function supports in-place operation where the output and input parameters are equal. The transform length must equal the transform length specified in the setup structure. > Important: > For best performance, make sure the two vector addresses you pass to this function are 16-byte-aligned. --- 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)