---
title: bnnsLossReductionFunction
framework: accelerate
role: symbol
role_heading: Instance Property
path: accelerate/bnns/lossreduction/bnnslossreductionfunction
---

# bnnsLossReductionFunction

The underlying loss reduction function structure.

## Declaration

```swift
var bnnsLossReductionFunction: BNNSLossReductionFunction { get }
```