---
title: "simd_negate(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_negate(_:)-3yw6m"
---

# simd_negate(_:)

## Declaration

```swift
func simd_negate(_ q: simd_quath) -> simd_quath
```

## Discussion

Discussion The negation (additive inverse) of the quaternion q.