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# BNNS

An enumeration that acts as a namespace for Swift overlays to BNNS.

```
enum BNNS
```

## Topics

### Base Classes

[`BNNS.Layer`](/documentation/Accelerate/BNNS/Layer)

The base class for layer objects that wrap filters and manage deinitialization.

[`BNNS.UnaryLayer`](/documentation/Accelerate/BNNS/UnaryLayer)

The base class for layers that accept a single input.

[`BNNS.BinaryLayer`](/documentation/Accelerate/BNNS/BinaryLayer)

The base class for layers that accept two inputs.


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