---
title: "simd_mul(_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_mul(_:_:)-8aedk"
---

# simd_mul(_:_:)

## Declaration

```swift
func simd_mul(_ a: Double, _ q: simd_quatd) -> simd_quatd
```

## See Also

### Applying arithmetic operations to quaternions

- [simd_add(_:_:)](simd/simd_add(_:_:)-6ohmq.md)
- [simd_mul(_:_:)](simd/simd_mul(_:_:)-531pe.md)
- [simd_mul(_:_:)](simd/simd_mul(_:_:)-8uidm.md)
- [simd_sub(_:_:)](simd/simd_sub(_:_:)-87caf.md)
- [exp(_:)](simd/exp(_:)-9nl1f.md)
- [log(_:)](simd/log(_:)-77xdo.md)