---
title: "GLKQuaternionAdd(_:_:)"
framework: GLKit
role: symbol
role_heading: Function
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: "glkit/glkquaternionadd(_:_:)"
---

# GLKQuaternionAdd(_:_:)

Returns the sum of two quaternions.

## Declaration

```swift
func GLKQuaternionAdd(_ quaternionLeft: GLKQuaternion, _ quaternionRight: GLKQuaternion) -> GLKQuaternion
```

## Parameters

- `quaternionLeft`: The first quaternion.
- `quaternionRight`: The second quaternion.

## Return Value

Return Value A new quaternion.

## See Also

### Performing Mathematical Operations on Quaternions

- [GLKQuaternionNormalize(_:)](glkit/glkquaternionnormalize(_:).md)
- [GLKQuaternionInvert(_:)](glkit/glkquaternioninvert(_:).md)
- [GLKQuaternionConjugate(_:)](glkit/glkquaternionconjugate(_:).md)
- [GLKQuaternionSubtract(_:_:)](glkit/glkquaternionsubtract(_:_:).md)
- [GLKQuaternionMultiply(_:_:)](glkit/glkquaternionmultiply(_:_:).md)
- [GLKQuaternionSlerp(_:_:_:)](glkit/glkquaternionslerp(_:_:_:).md)