---
title: "init(lowHalf:highHalf:)"
framework: swift
role: symbol
role_heading: Initializer
path: "swift/simd16/init(lowhalf:highhalf:)-3s760"
---

# init(lowHalf:highHalf:)

A vector formed by concatenating lowHalf and highHalf.

## Declaration

```swift
init(lowHalf: SIMD8<UInt>, highHalf: SIMD8<UInt>)
```

## Discussion

Discussion Equivalent to: var result = SIMD16<UInt>() for i in 0..<8 {   result[i] = lowHalf[i]   result[8+i] = highHalf[i] }