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Re: call external speed [message #12760 is a reply to message #12686]

Fri, 04 September 1998 00:00

rmlongfield
Messages: 68
Registered: August 1998

Member

In article <Pine.SO4.4.02.9809031131320.2992-100000@sukak>,
Karl Krieger <kak@ipp.mpg.de> wrote:

> BTW: I would recommend to use LINKIMAGE instead of CALL_EXTERNAL except
> perhaps for some quick and dirty hacks. With LINKIMAGE your procedures and
> functions have exactly the same syntax than the rest of IDL; you get
> argument checking, proper IDL error handling and it is possible to pass
> keyword parameters and structures to your routine. The downside is that it
> requires some more programming effort but it's really worth it IMHO.

Hi Karl, I've just figured out how to use CALL_EXTERNAL but am curious
about LINKIMAGE. The documentation is very sparse and the "Caution" is
discouraging. My main goal is to leave my C programs intact and independent
of IDL, i.e. I do not want to use callable IDL.

I have a question though: Which chapters in the Advanced Development guide
are related to LINKIMAGE? There seems to be a mixture of topics. Do you have
a short example? I can't find any in the IDL documentation. (I work with
UNIX on an SGI workstation.)

Most likely I will stay with CALL_EXTERNAL for now, since it is working.
But maybe in the future I will look into LINKIMAGE.

Rose

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[Message index]

		call external speed By: curtis volin on Wed, 02 September 1998 00:00
		Re: call external speed By: steinhh on Fri, 04 September 1998 00:00
		Re: call external speed By: rmlongfield on Fri, 04 September 1998 00:00
		Re: call external speed By: Karl Krieger on Thu, 03 September 1998 00:00
		Re: call external speed By: David Foster on Tue, 08 September 1998 00:00
		Re: call external speed By: Karl Krieger on Mon, 14 September 1998 00:00

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