---
title: "&+=(_:_:)"
framework: swift
role: symbol
role_heading: Operator
path: "swift/simd16/&+=(_:_:)-8omt4"
---

# &+=(_:_:)

Updates the left hand side with the wrapping sum of the two vectors.

## Declaration

```swift
static func &+= (a: inout SIMD16<Scalar>, b: SIMD16<Scalar>)
```