---
title: "simd_sub(_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_sub(_:_:)-47kxs"
---

# simd_sub(_:_:)

## Declaration

```swift
func simd_sub(_ p: simd_quath, _ q: simd_quath) -> simd_quath
```

## Discussion

Discussion The difference of the quaternions p and q.