---
title: "acosh(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/acosh(_:)-1e4qf"
---

# acosh(_:)

Returns the inverse hyperbolic cosine of each element in a vector.

## Declaration

```swift
func acosh(_ x: simd_double3) -> simd_double3
```

## See Also

### Hyperbolic Functions

- [asinh(_:)](simd/asinh(_:)-8b3vg.md)
- [atanh(_:)](simd/atanh(_:)-7z6qz.md)
- [cosh(_:)](simd/cosh(_:)-6f3bc.md)
- [sinh(_:)](simd/sinh(_:)-6glq8.md)
- [tanh(_:)](simd/tanh(_:)-4b44y.md)