---
title: "norm_one(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/norm_one(_:)-1cwpd"
---

# norm_one(_:)

Returns the sum of the absolute values of a vector.

## Declaration

```swift
func norm_one(_ x: SIMD4<Double>) -> Double
```

## See Also

### Vector Norm Functions

- [norm_inf(_:)](simd/norm_inf(_:)-8zws7.md)