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

# activation

The activation function that the layer applies to the output.

## Declaration

```swift
var activation: BNNSActivation
```

## See Also

### Instance Properties

- [i_desc](accelerate/bnnslayerparametersconvolution/i_desc.md)
- [w_desc](accelerate/bnnslayerparametersconvolution/w_desc.md)
- [o_desc](accelerate/bnnslayerparametersconvolution/o_desc.md)
- [bias](accelerate/bnnslayerparametersconvolution/bias.md)
- [x_stride](accelerate/bnnslayerparametersconvolution/x_stride.md)
- [y_stride](accelerate/bnnslayerparametersconvolution/y_stride.md)
- [x_dilation_stride](accelerate/bnnslayerparametersconvolution/x_dilation_stride.md)
- [y_dilation_stride](accelerate/bnnslayerparametersconvolution/y_dilation_stride.md)
- [x_padding](accelerate/bnnslayerparametersconvolution/x_padding.md)
- [y_padding](accelerate/bnnslayerparametersconvolution/y_padding.md)
- [groups](accelerate/bnnslayerparametersconvolution/groups.md)
- [pad](accelerate/bnnslayerparametersconvolution/pad.md)