# 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. ``` init(function: BNNSActivationFunction, alpha: Float, beta: Float, iscale: Int32, ioffset: Int32, ishift: Int32, iscale_per_channel: UnsafePointer?, ioffset_per_channel: UnsafePointer?, ishift_per_channel: UnsafePointer?) ``` ## 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 A new common activation function parameters structure. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)