---
title: "GLKMatrix4MultiplyVector4(_:_:)"
framework: GLKit
role: symbol
role_heading: Function
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: "glkit/glkmatrix4multiplyvector4(_:_:)"
---

# GLKMatrix4MultiplyVector4(_:_:)

Multiplies a 4x4 matrix by a 4-component vector.

## Declaration

```swift
func GLKMatrix4MultiplyVector4(_ matrixLeft: GLKMatrix4, _ vectorRight: GLKVector4) -> GLKVector4
```

## Parameters

- `matrixLeft`: The matrix multiplicand.
- `vectorRight`: The vector multiplier.

## Return Value

Return Value A new vector created by multiplying the matrix by the vector.

## See Also

### Performing Mathematical Operations on Vectors

- [GLKMatrix4MultiplyVector3(_:_:)](glkit/glkmatrix4multiplyvector3(_:_:).md)
- [GLKMatrix4MultiplyVector3Array(_:_:_:)](glkit/glkmatrix4multiplyvector3array(_:_:_:).md)
- [GLKMatrix4MultiplyVector3WithTranslation(_:_:)](glkit/glkmatrix4multiplyvector3withtranslation(_:_:).md)
- [GLKMatrix4MultiplyVector3ArrayWithTranslation(_:_:_:)](glkit/glkmatrix4multiplyvector3arraywithtranslation(_:_:_:).md)
- [GLKMatrix4MultiplyVector4Array(_:_:_:)](glkit/glkmatrix4multiplyvector4array(_:_:_:).md)
- [GLKMatrix4MultiplyAndProjectVector3(_:_:)](glkit/glkmatrix4multiplyandprojectvector3(_:_:).md)
- [GLKMatrix4MultiplyAndProjectVector3Array(_:_:_:)](glkit/glkmatrix4multiplyandprojectvector3array(_:_:_:).md)