---
title: "reduce_max(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/reduce_max(_:)-1u3hn"
---

# reduce_max(_:)

Returns the maximum value in a vector.

## Declaration

```swift
func reduce_max(_ x: SIMD3<Float>) -> Float
```

## See Also

### Reduce Functions

- [simd_reduce_add(_:)](simd/simd_reduce_add(_:)-2v85p.md)
- [reduce_add(_:)](simd/reduce_add(_:)-3xuqf.md)
- [simd_reduce_max(_:)](simd/simd_reduce_max(_:)-4gy97.md)
- [simd_reduce_min(_:)](simd/simd_reduce_min(_:)-46cif.md)
- [reduce_min(_:)](simd/reduce_min(_:)-3myvw.md)