---
title: simd_packed_half4
framework: simd
role: symbol
role_heading: Type Alias
path: simd/simd_packed_half4
---

# simd_packed_half4

## Declaration

```swift
typealias simd_packed_half4 = SIMD4<Float16>
```

## Discussion

Discussion A vector of four 16-bit floating-point numbers with relaxed alignment. simd::packed::half4. The alignment of this type is that of the underlying scalar element type, so you can use it to load or store from an array of that type.