---
title: "atan2(x:y:)"
framework: accelerate
role: symbol
role_heading: Type Method
path: "accelerate/vforce/atan2(x:y:)-h54u"
---

# atan2(x:y:)

Returns the arctangent of each pair of elements in two vectors of double-precision values.

## Declaration

```swift
static func atan2<U, V>(x: U, y: V) -> [Double] where U : AccelerateBuffer, V : AccelerateMutableBuffer, U.Element == Double, V.Element == Double
```

## Parameters

- `x`: The first input vector.
- `y`: The second input vector.

## See Also

### Array-Oriented Trigonometric Functions

- [acos(_:)](accelerate/vforce/acos(_:)-8srk.md)
- [acos(_:)](accelerate/vforce/acos(_:)-3hl5t.md)
- [acos(_:result:)](accelerate/vforce/acos(_:result:)-3c9qz.md)
- [acos(_:result:)](accelerate/vforce/acos(_:result:)-6rc2f.md)
- [asin(_:)](accelerate/vforce/asin(_:)-454ds.md)
- [asin(_:)](accelerate/vforce/asin(_:)-8vvt1.md)
- [asin(_:result:)](accelerate/vforce/asin(_:result:)-94jmy.md)
- [asin(_:result:)](accelerate/vforce/asin(_:result:)-ooti.md)
- [atan(_:)](accelerate/vforce/atan(_:)-1ghr3.md)
- [atan(_:)](accelerate/vforce/atan(_:)-5ejvk.md)
- [atan(_:result:)](accelerate/vforce/atan(_:result:)-691jp.md)
- [atan(_:result:)](accelerate/vforce/atan(_:result:)-6bb8n.md)
- [atan2(x:y:)](accelerate/vforce/atan2(x:y:)-3lku3.md)
- [atan2(x:y:result:)](accelerate/vforce/atan2(x:y:result:)-184b6.md)
- [atan2(x:y:result:)](accelerate/vforce/atan2(x:y:result:)-6j6xb.md)