---
title: "vvlog1pf(_:_:_:)"
framework: accelerate
role: symbol
role_heading: Function
path: "accelerate/vvlog1pf(_:_:_:)"
---

# vvlog1pf(_:_:_:)

Calculates log(1+x) for each element in an array of single-precision values.

## Declaration

```swift
func vvlog1pf(_: UnsafeMutablePointer<Float>, _: UnsafePointer<Float>, _: UnsafePointer<Int32>)
```

## Discussion

Discussion Parameters: If x is nearly zero, the expression log(1+x) will be highly inaccurate due to floating point rounding errors in (1+x). This function provides an alternative, more accurate means to calculate this value.

## See Also

### Array-Oriented Exponential and Logarithmic Functions

- [exp(_:)](accelerate/vforce/exp(_:)-76nrd.md)
- [exp(_:)](accelerate/vforce/exp(_:)-5iaun.md)
- [exp(_:result:)](accelerate/vforce/exp(_:result:)-34nxw.md)
- [exp(_:result:)](accelerate/vforce/exp(_:result:)-4k85n.md)
- [exp2(_:)](accelerate/vforce/exp2(_:)-2m5q.md)
- [exp2(_:)](accelerate/vforce/exp2(_:)-4mm9y.md)
- [exp2(_:result:)](accelerate/vforce/exp2(_:result:)-6ru6m.md)
- [exp2(_:result:)](accelerate/vforce/exp2(_:result:)-8m564.md)
- [expm1(_:)](accelerate/vforce/expm1(_:)-xkzx.md)
- [expm1(_:)](accelerate/vforce/expm1(_:)-mfq5.md)
- [expm1(_:result:)](accelerate/vforce/expm1(_:result:)-4dpl4.md)
- [expm1(_:result:)](accelerate/vforce/expm1(_:result:)-2yhs3.md)
- [log10(_:)](accelerate/vforce/log10(_:)-9wr68.md)
- [log(_:)](accelerate/vforce/log(_:)-2gh9a.md)
- [log(_:)](accelerate/vforce/log(_:)-5ffby.md)