---
title: "log2(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/log2(_:)-8x5g"
---

# log2(_:)

Returns the base 2 logarithm of each element in a vector.

## Declaration

```swift
func log2(_ x: simd_float2) -> simd_float2
```

## See Also

### Exponential and Logarithmic Functions

- [exp(_:)](simd/exp(_:)-3pa97.md)
- [exp2(_:)](simd/exp2(_:)-6sez2.md)
- [exp10(_:)](simd/exp10(_:)-6ga3o.md)
- [expm1(_:)](simd/expm1(_:)-3bqf9.md)
- [log(_:)](simd/log(_:)-1zfuo.md)
- [log10(_:)](simd/log10(_:)-4yb6z.md)
- [log1p(_:)](simd/log1p(_:)-15zc7.md)