---
title: "project(_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/project(_:_:)-pdsh"
---

# project(_:_:)

Returns the first vector projected onto the second vector.

## Declaration

```swift
func project(_ x: SIMD4<Float>, _ y: SIMD4<Float>) -> SIMD4<Float>
```

## See Also

### Geometry Functions

- [dot(_:_:)](simd/dot(_:_:)-47df.md)
- [normalize(_:)](simd/normalize(_:)-6g9xc.md)
- [reflect(_:n:)](simd/reflect(_:n:)-8i5cc.md)
- [refract(_:n:eta:)](simd/refract(_:n:eta:)-8qo9c.md)