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Re: C++ in IDL [message #44202 is a reply to message #29423]

Tue, 31 May 2005 09:35

Rick Towler
Messages: 821
Registered: August 1998

Senior Member

Tim-Oliver Husser wrote:

> this is my first posting here, so let me just say hello. :-)

Well hello there.

> I've got some small problem with IDL 6.0 and it would give me great
> pleasure, if someone could help me with that.
> There is some heavy computation I have to do within IDL (running a
> genetic algorithm, so it's really pure number crunching) and I was
> thinking about porting that algorithm to C/C++ to call it via
> call_external. I assume, that the code would be much faster in C/C++,
> wouldn't it?

It depends, but most likely yes. I would write a dlm, not use call
external.

> Has anyone ever tried to do something like this and could help me?

Sure. I wasn't sure I could write a C++ dlm so I wrote a simple test
program, got that to work, and went from there. I can't comment on your
linux particulars, but I can offer up this simple example which may or
may not be of help. At any rate, this can be done so push on. The
example files:

http://www.acoustics.washington.edu/~towler/programs/Mgc_vec tor.zip

Also, since I wrote this Ronn Kling has updated his book "Calling C from
IDL" to include a chapter on calling C++. I would highly recommend
picking this book up from his website http://www.kilvarock.com.

-Rick

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[Message index]

		C++ in IDL By: chrisduckworth on Thu, 21 February 2002 17:25
		Re: C++ in IDL By: Rick Towler on Tue, 31 May 2005 09:35
		Re: C++ in IDL By: Tim-Oliver Husser on Wed, 01 June 2005 05:33
		Re: C++ in IDL By: Antonio Santiago on Mon, 30 May 2005 23:37
		Re: C++ in IDL By: Rick Towler on Thu, 02 June 2005 09:32
		Re: C++ in IDL By: R.G. Stockwell on Wed, 01 June 2005 15:42
		Re: C++ in IDL By: JD Smith on Wed, 01 June 2005 10:00
		Re: C++ in IDL By: David Fanning on Wed, 01 June 2005 09:10
		Re: C++ in IDL By: Michael Wallace on Wed, 01 June 2005 08:31

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