---
title: "init(function:alpha:beta:iscale:ioffset:ishift:iscale_per_channel:ioffset_per_channel:ishift_per_channel:)"
framework: accelerate
role: symbol
role_heading: Initializer
path: "accelerate/bnnsactivation/init(function:alpha:beta:iscale:ioffset:ishift:iscale_per_channel:ioffset_per_channel:ishift_per_channel:)"
---

# init(function:alpha:beta:iscale:ioffset:ishift:iscale_per_channel:ioffset_per_channel:ishift_per_channel:)

Returns a new common activation function parameters structure that uses the specified function, alpha, beta, integer scale, offset, and shift.

## Declaration

```swift
init(function: BNNSActivationFunction, alpha: Float, beta: Float, iscale: Int32, ioffset: Int32, ishift: Int32, iscale_per_channel: UnsafePointer<Int32>?, ioffset_per_channel: UnsafePointer<Int32>?, ishift_per_channel: UnsafePointer<Int32>?)
```

## Parameters

- `function`: The activation function.
- `alpha`: The parameter for the alpha of the activation function.
- `beta`: The parameter for the beta of the activation function.
- `iscale`: Scale for integer functions.
- `ioffset`: Offset for integer functions.
- `ishift`: Shift for integer functions.
- `iscale_per_channel`: Scale per channel for integer functions.
- `ioffset_per_channel`: Offset per channel for integer functions.
- `ishift_per_channel`: Shift per channel for integer functions.

## Return Value

Return Value A new common activation function parameters structure.

## See Also

### Initializers

- [init()](accelerate/bnnsactivation/init().md)
- [init(function:alpha:beta:)](accelerate/bnnsactivation/init(function:alpha:beta:).md)