# init(data:data_type:data_scale:data_bias:data_table:) Returns a new layer data structure. ``` init(data: UnsafeRawPointer?, data_type: BNNSDataType, data_scale: Float, data_bias: Float, data_table: UnsafePointer?) ``` ## Parameters `data` Pointer to layer values (weights, bias), layout and size are specific to each layer. `data_type` Storage data type for the values stored in [`data`](/documentation/Accelerate/BNNSLayerData/data). `data_scale` Conversion scale for values, used for integer data types only, ignored for indexed and float data types. `data_bias` Conversion bias for values, used for integer data types only, ignored for indexed and float data types. `data_table` Conversion table (256 values) for indexed floating point data, used for indexed data types only. ## Return Value A new layer data structure. ## Discussion --- 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)