---
title: "expm1(_:)"
framework: simd
role: symbol
role_heading: Function
path: "simd/expm1(_:)-90g3j"
---

# expm1(_:)

Returns eˣ-1 for each element in a vector.

## Declaration

```swift
func expm1(_ x: simd_float16) -> simd_float16
```

## See Also

### Exponential and Logarithmic Functions

- [exp(_:)](simd/exp(_:)-2ru57.md)
- [exp2(_:)](simd/exp2(_:)-271hg.md)
- [exp10(_:)](simd/exp10(_:)-165iq.md)
- [log(_:)](simd/log(_:)-44j3q.md)
- [log2(_:)](simd/log2(_:)-8nusk.md)
- [log10(_:)](simd/log10(_:)-7eq4p.md)
- [log1p(_:)](simd/log1p(_:)-2uw4e.md)