PC vs Mac - Reading and Writing Integers
BlitzMax Forums/BlitzMax Programming/PC vs Mac - Reading and Writing Integers
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| On a PC when I write a variable to a file as an integer it retains its value when the file is loaded up again. But when I move the code to my Mac PowerPC its an entirely different value. Is this a bug? |
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| PPC uses Big-Endian, X86 uses Little-Endian - see Endianness for more details :-) Basically, the byte-order is reversed. There are TStreams which support different endianness, so you can use those to ensure that the data is loaded/saved in the same way on all platforms. |
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| right, I'm looking at the endian stream functions now... could someone please show me how I could use these? the documentation lacks samples :P |
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| Create your stream as usual, but then push it into either LittleEndianStream() or BigEndianStream(). Those functions return a new TStream which wraps your original stream, and applies endian conversion if necessary. So, possibly something like :
Local myfile:TStream = LittleEndianStream(WriteStream("myfile.txt"))
myfile.WriteInt(12345)
myfile.Close()
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| Pick either little or big endian stream (arbitrary choice), and then always use that type for every file operation. Problem solved ;D |
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| alrighty, thanks! I'll give it a go :) |
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