---
title: "acosh(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/acosh(_:)-2zf9d"
---

# acosh(_:)

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

## Declaration

```swift
func acosh(_ x: simd_double8) -> simd_double8
```

## See Also

### Hyperbolic Functions

- [asinh(_:)](simd/asinh(_:)-5vu4r.md)
- [atanh(_:)](simd/atanh(_:)-d3b3.md)
- [cosh(_:)](simd/cosh(_:)-1g57o.md)
- [sinh(_:)](simd/sinh(_:)-ip9w.md)
- [tanh(_:)](simd/tanh(_:)-1ag6z.md)