---
title: BNNSGraph.Builder.Activation
framework: accelerate
role: symbol
role_heading: Enumeration
path: accelerate/bnnsgraph/builder/activation
---

# BNNSGraph.Builder.Activation

The activation function that a recurrent operation uses.

## Declaration

```swift
enum Activation
```

## Topics

### Enumeration Cases

- [BNNSGraph.Builder.Activation.hardSigmoid](accelerate/bnnsgraph/builder/activation/hardsigmoid.md)
- [BNNSGraph.Builder.Activation.linear](accelerate/bnnsgraph/builder/activation/linear.md)
- [BNNSGraph.Builder.Activation.relu](accelerate/bnnsgraph/builder/activation/relu.md)
- [BNNSGraph.Builder.Activation.scaledTanh](accelerate/bnnsgraph/builder/activation/scaledtanh.md)
- [BNNSGraph.Builder.Activation.sigmoid](accelerate/bnnsgraph/builder/activation/sigmoid.md)
- [BNNSGraph.Builder.Activation.tanh](accelerate/bnnsgraph/builder/activation/tanh.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)