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read a C written binary file with IDL [message #79238]

Thu, 09 February 2012 19:44

Thibault Garel
Messages: 55
Registered: October 2009

Member

Hi,

I am having a problem with reading a C written binary file with IDL.
It may come from differences of type definitions between C and IDL but
I could not really figure out from Google...

In C, it writes a structure containing the following variable types:

struct MyStruct
{
int a;
long long b;
int c;
float d;
};

Then, in IDL, I read this with:

MyStruct = {$
a : 0L, $
b : 0LL, $
c : 0L, $
d : 0.0 $
}

openr, 1, filename, /SWAP_IF_BIG_ENDIAN
readu, 1, MyStruct
close, 1

but this gives me wrong values.

Did I miss something about the type conversion??

If someone could please clarify this, it would really help!
Thanks !

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[Message index]

		read a C written binary file with IDL By: Thibault Garel on Thu, 09 February 2012 19:44
		Re: read a C written binary file with IDL By: David Fanning on Wed, 22 February 2012 05:24
		Re: read a C written binary file with IDL By: Thibault Garel on Sun, 11 March 2012 19:49
		Re: read a C written binary file with IDL By: Thibault Garel on Tue, 21 February 2012 21:45
		Re: read a C written binary file with IDL By: manodeep@gmail.com on Mon, 20 February 2012 19:43

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