---
title: "atan2(_:_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/atan2(_:_:)-52zvp"
---

# atan2(_:_:)

Returns the arctangent of each pair of corresponding elements in two vectors.

## Declaration

```swift
func atan2(_ y: simd_float8, _ x: simd_float8) -> simd_float8
```

## See Also

### Trigonometric Functions

- [acos(_:)](simd/acos(_:)-7zw9c.md)
- [asin(_:)](simd/asin(_:)-476k0.md)
- [atan(_:)](simd/atan(_:)-al43.md)
- [cos(_:)](simd/cos(_:)-6spt8.md)
- [cospi(_:)](simd/cospi(_:)-mwoe.md)
- [sin(_:)](simd/sin(_:)-8n720.md)
- [sinpi(_:)](simd/sinpi(_:)-5sfds.md)
- [sincos(_:)](simd/sincos(_:)-26uzx.md)
- [sincospi(_:)](simd/sincospi(_:)-3cme4.md)
- [tan(_:)](simd/tan(_:)-6t9p5.md)
- [tanpi(_:)](simd/tanpi(_:)-5w53i.md)