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

# vscalbf(_:_:)

For each vector element, calculates x * 2^n efficiently.  This is not normally done by computing 2^n explicitly.

## Declaration

```swift
func vscalbf(_: vFloat, _: vSInt32) -> vFloat
```

## See Also

### Exponential and Logarithmic Functions (from vfp.h)

- [vexpf(_:)](accelerate/vexpf(_:).md)
- [vexp2f(_:)](accelerate/vexp2f(_:).md)
- [vexpm1f(_:)](accelerate/vexpm1f(_:).md)
- [vlogf(_:)](accelerate/vlogf(_:).md)
- [vlog1pf(_:)](accelerate/vlog1pf(_:).md)
- [vlog10f(_:)](accelerate/vlog10f(_:).md)
- [vlogbf(_:)](accelerate/vlogbf(_:).md)
- [vlog2f(_:)](accelerate/vlog2f(_:).md)
- [vvpows(_:_:_:_:)](accelerate/vvpows(_:_:_:_:).md)
- [vvpowsf(_:_:_:_:)](accelerate/vvpowsf(_:_:_:_:).md)