---
title: BNNSArithmeticLog2
framework: accelerate
role: symbol
role_heading: Global Variable
path: accelerate/bnnsarithmeticlog2
---

# BNNSArithmeticLog2

An operation that calculates the element-wise base 2 logarithm of its input.

## Declaration

```swift
var BNNSArithmeticLog2: BNNSArithmeticFunction { get }
```

## See Also

### Exponential and Logarithmic Functions

- [BNNSArithmeticExp](accelerate/bnnsarithmeticexp.md)
- [BNNSArithmeticExp2](accelerate/bnnsarithmeticexp2.md)
- [BNNSArithmeticLog](accelerate/bnnsarithmeticlog.md)