Convert UInt32 to 4 bytes Swift

Question

How do I convert a UInt32 value to 4 bytes in swift?

I have a value of (3) when I get;

IPP_ORIENTATION.PORTRAIT.rawValue

Now, I need to convert that value into 4 bytes.

Thanks.

Does this answer your question? [round trip Swift number types to/from Data](https://stackoverflow.com/questions/38023838/round-trip-swift-number-types-to-from-data) — , Mar 22 '21 at 17:38
@Jessy, no I need 4 bytes in both separate bigEndian and littleEndian — Andrew, Mar 22 '21 at 17:40
Possibly helpful: https://stackoverflow.com/q/29970204/1187415. — Martin R, Mar 22 '21 at 20:05

score 2 · Accepted Answer · answered Mar 22 '21 at 17:43

2

let value: UInt32 = 1
var u32LE = value.littleEndian // or simply value
let dataLE = Data(bytes: &u32LE, count: 4)
let bytesLE = Array(dataLE)  // [1, 0, 0, 0]

var u32BE = value.bigEndian
let dataBE = Data(bytes: &u32BE, count: 4)
let bytesBE = Array(dataBE)  // [0, 0, 0, 1]

answered Mar 22 '21 at 17:43

Leo Dabus

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Thank you, didn't know the property little/big Endian existed! – Andrew Mar 22 '21 at 17:44
Interesting. (voted.) Is there a similar method to littleEndian/bigEndian to get platform specific binary representations of floating point values? – Duncan C Mar 22 '21 at 17:51
@DuncanC https://stackoverflow.com/questions/47502591/convert-a-date-absolute-time-to-be-sent-received-across-the-network-as-data-in/47502712#comment81980820_47502712 – Leo Dabus Mar 22 '21 at 17:54

Convert UInt32 to 4 bytes Swift

1 Answers1