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# NSSwapHostLongToBig(_:)

Swaps the bytes of a number.

```
func NSSwapHostLongToBig(_ x: UInt) -> UInt
```

## Discussion

Converts the value in `x`, specified in the current endian format, to big-endian format and returns the resulting value. If it is necessary to swap the bytes, this function calls [`NSSwapLong(_:)`](/documentation/Foundation/NSSwapLong(_:)) to perform the swap.

## See Also

[`func NSSwapHostLongToLittle(UInt) -> UInt`](/documentation/Foundation/NSSwapHostLongToLittle(_:))

Swaps the bytes of a number.

[`func NSSwapBigLongToHost(UInt) -> UInt`](/documentation/Foundation/NSSwapBigLongToHost(_:))

Swaps the bytes of a number.


---

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