[Pyrex] Pyrex questions

[Simon Burton]

On Tue, 01 Jun 2004 16:56:06 +1000
Tom Kobialka <u3356514 at anu.edu.au> wrote:

> Hi Simon,
> 
>   Yes, I would have assumed this is implied, but I should have been more 
> specific. I'm trying to encapsulate a C program *in python* with the aid 
> of Pyrex.
> 

My fault - I'm not sure what you are meaning by "encapsulate".
I'm guessing you want to call functions in this C program from python.
But you also want to call your grav library from python ?
This is often called "wrapping" :)

> 
>   I am encapsulating a small C program that makes use of a very specific 
>    gravitational wave frame library. I want to call the routines in the 
> library from my C program. Do I have to encapsulate the library in Pyrex 
> in order to call it from my encapsulated C program? Reading through the 
> Pyrex documentation I get the feeling that I will. This library is  of a 
> reasonable size and i'm not looking forward to encapsulating it. Could I 
> get away with only encapsulating the routines that my program calls? If 
> so, do I need to take into account other routines that these routines 
> may call?

You only need to write definitions (etc.) for the functions you will be calling.

>   I have read through the Pyrex doco and it doesn't seem to mention C 
> routines and procedures such as atoi, malloc, opendir (dirent.h), 
> casting or nesting i.e monkey = (char *) malloc(strlen(banana) + 
> strlen(paddlepop->chocolate)) which a large proportion of my code 
> involves. 

Yes, you can use these functions from pyrex code too (just write definitions for them).

Oh, hey, you are just around the corner from me, maybe I should just come over!! haha ..

Simon.

-- 
Simon Burton, B.Sc.
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