---
title: FFTDirection
framework: Kernel
role: symbol
role_heading: Type Alias
platforms: [macOS 10.13+]
path: kernel/fftdirection
---

# FFTDirection

Specifies whether to perform a forward or inverse FFT.

## Declaration

```occ
typedef int FFTDirection;
```

## Topics

### Constants

- [kFFTDirection_Inverse](kernel/1645049-anonymous/kfftdirection_inverse.md)