---
title: vDSP_DFT_Direction.FORWARD
framework: accelerate
role: symbol
role_heading: Case
path: accelerate/vdsp_dft_direction/forward
---

# vDSP_DFT_Direction.FORWARD

A constant that specifies a forward transform.

## Declaration

```swift
case FORWARD
```

## Discussion

Discussion Use vDSP_DFT_Direction.FORWARD to transform a signal from the time domain to the frequency domain.

## See Also

### Constants

- [vDSP_DFT_Direction.INVERSE](accelerate/vdsp_dft_direction/inverse.md)