---
title: activation
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/bnnsconvolutionlayerparameters/activation
---

# activation

The layer activation function.

## Declaration

```swift
var activation: BNNSActivation
```

## See Also

### Instance Properties

- [bias](accelerate/bnnsconvolutionlayerparameters/bias.md)
- [in_channels](accelerate/bnnsconvolutionlayerparameters/in_channels.md)
- [k_height](accelerate/bnnsconvolutionlayerparameters/k_height.md)
- [k_width](accelerate/bnnsconvolutionlayerparameters/k_width.md)
- [out_channels](accelerate/bnnsconvolutionlayerparameters/out_channels.md)
- [weights](accelerate/bnnsconvolutionlayerparameters/weights.md)
- [x_padding](accelerate/bnnsconvolutionlayerparameters/x_padding.md)
- [x_stride](accelerate/bnnsconvolutionlayerparameters/x_stride.md)
- [y_padding](accelerate/bnnsconvolutionlayerparameters/y_padding.md)
- [y_stride](accelerate/bnnsconvolutionlayerparameters/y_stride.md)