---
title: "acosh(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/acosh(_:)-5ye64"
---

# acosh(_:)

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

## Declaration

```swift
func acosh(_ x: simd_float8) -> simd_float8
```

## See Also

### Hyperbolic Functions

- [asinh(_:)](simd/asinh(_:)-1uw5q.md)
- [atanh(_:)](simd/atanh(_:)-95265.md)
- [cosh(_:)](simd/cosh(_:)-6rb1l.md)
- [sinh(_:)](simd/sinh(_:)-43ijd.md)
- [tanh(_:)](simd/tanh(_:)-tpg5.md)