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Re: Endian-ness [message #29302 is a reply to message #29236]

Mon, 11 February 2002 10:01

Robert Stockwell
Messages: 74
Registered: October 2001

Member

Jonathan Joseph wrote:

> Thank you David and Liam,
>
> Liam's result seems more aesthetically pleasing (no offense David).
> Unfortunately, I don't think I can use the swap_if_big_endian and
> swap_if_little_endian keywords to OPEN, because whether I swap or
> not depends on BOTH the hardware and the file. I have no a-priori
> knowledge of the endian-ness of the file until I've already
> opened it. Although, I guess I could open the file, figure out
> what it is, close it and then re-open it.

This is exactly what I do. I have a rule that all data I write
shall be little endian, but there still can be files that are
big endian. I have a small range of possible values, so I read the
data in little endian, check the range, and if it exceeds the
range, reread the data as bigendian.
That seems to be the only way to tell if a file was written
as big/little endian. Of course, one could put a header
on the file indicating how it was written, but if someone else
writes the data, you are out of luck.

Cheers,
bob

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[Message index]

		Endian-ness By: Jonathan Joseph on Fri, 08 February 2002 12:47
		Re: Endian-ness By: Robert Stockwell on Mon, 11 February 2002 10:01
		Re: Endian-ness By: Liam E. Gumley on Mon, 11 February 2002 08:12

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