---
title: vDSP.FourierTransformDirection
framework: accelerate
role: symbol
role_heading: Enumeration
path: accelerate/vdsp/fouriertransformdirection
---

# vDSP.FourierTransformDirection

Fast Fourier transform directions.

## Declaration

```swift
enum FourierTransformDirection
```

## Topics

### Enumeration Cases

- [vDSP.FourierTransformDirection.forward](accelerate/vdsp/fouriertransformdirection/forward.md)
- [vDSP.FourierTransformDirection.inverse](accelerate/vdsp/fouriertransformdirection/inverse.md)

### Instance Properties

- [dftDirection](accelerate/vdsp/fouriertransformdirection/dftdirection.md)
- [fftDirection](accelerate/vdsp/fouriertransformdirection/fftdirection.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)

## See Also

### Objects that Simplify FFTs

- [vDSP.FFT](accelerate/vdsp/fft.md)
- [vDSP.FFT2D](accelerate/vdsp/fft2d.md)
- [vDSP.Radix](accelerate/vdsp/radix.md)