---
title: "init(unitSize:nUnits:searchRange:entrySelector:rangeShift:)"
framework: Core Text
role: symbol
role_heading: Initializer
path: "coretext/sfntlookupbinarysearchheader/init(unitsize:nunits:searchrange:entryselector:rangeshift:)"
---

# init(unitSize:nUnits:searchRange:entrySelector:rangeShift:)

## Declaration

```swift
init(unitSize: UInt16, nUnits: UInt16, searchRange: UInt16, entrySelector: UInt16, rangeShift: UInt16)
```