---
title: FFTRadix
framework: accelerate
role: symbol
role_heading: Type Alias
path: accelerate/fftradix
---

# FFTRadix

The radix of the FFT decomposition.

## Declaration

```swift
typealias FFTRadix = Int32
```

## Discussion

Discussion Pass an FFTRadix value as an argument to vDSP_create_fftsetup or vDSP_create_fftsetupD.

## See Also

### FFT Setup

- [FFTSetup](accelerate/fftsetup.md)
- [FFTSetupD](accelerate/fftsetupd.md)