---
title: "simd_reduce_add(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_reduce_add(_:)-2ymlg"
---

# simd_reduce_add(_:)

Returns the sum of all elements in a vector.

## Declaration

```swift
func simd_reduce_add(_ x: simd_double4) -> Double
```

## See Also

### Reduce Functions

- [reduce_add(_:)](simd/reduce_add(_:)-7psay.md)
- [simd_reduce_max(_:)](simd/simd_reduce_max(_:)-4qv3y.md)
- [reduce_max(_:)](simd/reduce_max(_:)-66smw.md)
- [simd_reduce_min(_:)](simd/simd_reduce_min(_:)-4umgm.md)
- [reduce_min(_:)](simd/reduce_min(_:)-4bbr.md)