---
title: "sign(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/sign(_:)-iwmp"
---

# sign(_:)

Returns the sign of each element in a vector.

## Declaration

```swift
func sign(_ x: Double) -> Double
```

## See Also

### Common Functions

- [step(_:edge:)](simd/step(_:edge:)-382a5.md)
- [simd_step(_:_:)](simd/simd_step(_:_:)-8mpre.md)
- [simd_clamp(_:_:_:)](simd/simd_clamp(_:_:_:)-1ktlk.md)
- [simd_fract(_:)](simd/simd_fract(_:)-1wsn4.md)
- [simd_sign(_:)](simd/simd_sign(_:)-937ee.md)