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Re: Convert a byte array to a structure? [message #28877 is a reply to message #28875]

Thu, 17 January 2002 15:43

Bhautik Joshi
Messages: 21
Registered: November 2001

Junior Member

> Does IDL have a simple and/or elegant way to convert a byte array
> into a structure?
> ..
> But is there a better, platform independent, way?
> (Windows NT/2K, Linux, and Solaris)
I've had no luck with READS and the FORMAT keword either :(

Problem is this:
Lets say we have an arbitrary array of bytes, of length n. We also have
a field, of n bytes length, that needs to be filled with that data as
the concatenation of those values. As an example:

['ff'x,'01'x] -> 'ff01'x -> 65281

BYTE[2] -> intermediate step (?) -> FIX[1]

Would it be possible to do this with other size fields (like converting
4 bytes to a floating point number etc.)? Simply 'gluing' the elements
of they byte array together, like 255*byte[0]+ byte[1] won't work with
floating point numbers (?). I suspect the solution may involve pointers
somehow, but I'm not sure how it might be done.

Then again, I might be missing something blindingly obvious, so please
let me know :)

cheers,
Bhautik

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[Message index]

		Re: Convert a byte array to a structure? By: Craig Markwardt on Thu, 17 January 2002 16:10
		Re: Convert a byte array to a structure? By: Bhautik Joshi on Thu, 17 January 2002 15:43
		Re: Convert a byte array to a structure? By: Bhautik Joshi on Thu, 17 January 2002 14:57
		Re: Convert a byte array to a structure? By: Pavel A. Romashkin on Thu, 17 January 2002 13:39
		Re: Convert a byte array to a structure? By: sven on Sat, 26 January 2002 00:06

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