---
title: in
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/bnnsarithmeticunary/in
---

# in

The descriptor of the input.

## Declaration

```swift
var `in`: BNNSNDArrayDescriptor
```

## See Also

### Inspecting the Properties of an Arithmetic Structure

- [in_type](accelerate/bnnsarithmeticunary/in_type.md)
- [out](accelerate/bnnsarithmeticunary/out.md)
- [out_type](accelerate/bnnsarithmeticunary/out_type.md)