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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Interfacing Ada with C
Newsgroups: comp.lang.ada
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Date: Sat, 24 Jul 2010 21:16:42 +0200
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Date: 2010-07-24T21:16:44+02:00
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On Sat, 24 Jul 2010 11:04:18 -0700 (PDT), Ada novice wrote:

> On Jul 24, 6:44�pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
> 
>> Since C does not have arrays, especially 2D ones, you will have some custom
>> representation on the C side. It means that examples of bindings (there are
>> plenty of) won't help you unless you understand how you describe a
>> C-compatible object in Ada.
> 
> Thanks for the "warnings". One way that I'm thinking is to write the
> elements of the matrix sequentially into a file in Ada, read them into
> C, put them into a matrix in C, do the appropriate computations in C
> (with the IMSL C library), write the output in C in a file, and
> finally importing them back into Ada again for further processing. Of
> course, having several read-write operations is not computationally
> time-efficient but this is a modest way to get starting. I know C at a
> basic level and I'm not not an extensive user.

Why not to call IMSL directly from Ada? I looked shortly here

http://www.vni.com/products/imsl/c/TechSpecs/CNLspecs3MatrixStorage.php

it looks well documented and fairly designed. There should be no problem to
call it from Ada.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de