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Re: Problem addressing arrays from C routines running OSF [message #5738 is a reply to message #5657]

Thu, 01 February 1996 00:00

thompson
Messages: 584
Registered: August 1991

Senior Member

Stubbe Faurschou Hviid <stubbe@fys.ku.dk> writes:

(stuff deleted)

> This method of addressing an array works under Solaris, SGI Irix
> and Windows
> but not under OSF/1 on a DEC alpha workstation.

> I think that the problem is that IDL tries to send a 32 bit
> pointer, and the
> C program expects a 64 bit pointer ( a good way to create chaos
> :-) )

I have successfully used CALL_EXTERNAL to C programs with IDL 3.6 under OSF/1.
I don't know enough about C programming to tell you why your program didn't
work, but you can find some examples in

http://sohowww.nascom.nasa.gov/softops/cds/external/

(You can also ftp to sohoftp.nascom.nasa.gov and look in the directory
/softops/cds/external.)

Maybe the problem is in the way you compile the routine. You'll notice that I
have different Makefiles for OSF and SunOS.

Bill Thompson

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		Problem addressing arrays from C routines running OSF By: Stubbe Faurschou Hvii on Tue, 30 January 1996 00:00
		Re: Problem addressing arrays from C routines running OSF By: thompson on Thu, 01 February 1996 00:00

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