---
title: "simd_reduce_max(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/simd_reduce_max(_:)-4qjkm"
---

# simd_reduce_max(_:)

Returns the maximum value in a vector.

## Declaration

```swift
func simd_reduce_max(_ x: simd_int4) -> Int32
```

## See Also

### Reduce Functions

- [simd_reduce_min(_:)](simd/simd_reduce_min(_:)-4uaza.md)
- [reduce_min(_:)](simd/reduce_min(_:)-6npco.md)
- [reduce_max(_:)](simd/reduce_max(_:)-5afy1.md)
- [simd_reduce_add(_:)](simd/simd_reduce_add(_:)-2ybq8.md)
- [reduce_add(_:)](simd/reduce_add(_:)-89ptt.md)