[SciPy-user] C++ extensions

David Grant david at dwavesys.com
Fri Oct 29 18:18:24 CDT 2004


Pearu Peterson wrote:

>
>
> On Fri, 29 Oct 2004, David Grant wrote:
>
>> I also see this: http://docs.python.org/ext/ext.html.  It says how to 
>> build a module but not how to actually USE it??
>
>
> Did you read the first section of this document:
>
>   http://docs.python.org/ext/simpleExample.html
>
> ?

Yeah, but that was for C.  Mine is C++.  I thought it would be a little 
different.

>
>> David Grant wrote:
>>
>>> Anyone used SWIG?
>>
>
> Yes, of course;-)

So will it work for me?  From what I've told you so far?

>
>>> David Grant wrote:
>>>
>>>> Hey guys (and girls, are there any???),
>>>>
>>>> I have some C++ code, it does a decomposition of a large matrix..  
>>>> It has a bunch of objects.  It is very black box though, you just 
>>>> declare an object, give it the matrix and it will give an output.  
>>>> I think it uses CLAPACK.  I would like to call this from python.
>>>
>
> What kind of a matrix decomposition are you trying to calculate? May 
> be scipy.linalg has it already.
>
It does some CSD.  But the algorithm is specific to quantum computing, 
so I doubt it is in scipy.linalg.  Although I'm not sure how much of 
this code is CSD and how much is other stuff.  It's possible I guess to 
use scipy.linalg and rewrite the supporting stuff in python directly.

> Pearu
>
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-- 
David J. Grant
Scientific Officer
Intellectual Property
D-Wave Systems Inc.
tel: 604.732.6604
fax: 604.732.6614


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