numpy-discussion

[Numpy-discussion] Examples of basic C API usage?

[Bill B. <wb...@gm...>]

I see Pyrex and SWIG examples in numpy/doc but there doesn't seem to be an
example of just a simple straightforward usage of the C-API.
For instance make a few arrays by hand in C and then call numpy.multiply()
on them.  So far my attempts to call PyArray_SimpleNewFromData all result in
segfaults.
Anyone have such an example?

--Bill

Re: [Numpy-discussion] Examples of basic C API usage?

[Karol L. <kar...@kn...>]

On Tuesday 08 of August 2006 05:18, Bill Baxter wrote:
> I see Pyrex and SWIG examples in numpy/doc but there doesn't seem to be an
> example of just a simple straightforward usage of the C-API.
> For instance make a few arrays by hand in C and then call numpy.multiply()
> on them.  So far my attempts to call PyArray_SimpleNewFromData all result
> in segfaults.
> Anyone have such an example?
>
> --Bill

Have you looked here?

http://numeric.scipy.org/numpydoc/numpy-13.html#pgfId-36640

Karol

-- 
written by Karol Langner
wto sie  8 15:45:16 CEST 2006

Re: [Numpy-discussion] Examples of basic C API usage?

[Bill B. <wb...@gm...>]

Ah, great.  That is helpful, though it does seem to be a bit outdated.

--bb

On 8/8/06, Karol Langner <kar...@kn...> wrote:
>
> On Tuesday 08 of August 2006 05:18, Bill Baxter wrote:
> > I see Pyrex and SWIG examples in numpy/doc but there doesn't seem to be
> an
> > example of just a simple straightforward usage of the C-API.
> > For instance make a few arrays by hand in C and then call numpy.multiply
> ()
> > on them.  So far my attempts to call PyArray_SimpleNewFromData all
> result
> > in segfaults.
> > Anyone have such an example?
> >
> > --Bill
>
> Have you looked here?
>
> http://numeric.scipy.org/numpydoc/numpy-13.html#pgfId-36640
>
> Karol
>
> --
> written by Karol Langner
> wto sie  8 15:45:16 CEST 2006
>
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Re: [Numpy-discussion] Examples of basic C API usage?

[Benjamin T. <ben...@de...>]

Le Mardi 8 Ao=FBt 2006 05:18, Bill Baxter a =E9crit=A0:
> I see Pyrex and SWIG examples in numpy/doc but there doesn't seem to be an
> example of just a simple straightforward usage of the C-API.
> For instance make a few arrays by hand in C and then call numpy.multiply()
> on them.  So far my attempts to call PyArray_SimpleNewFromData all result
> in segfaults.
> Anyone have such an example?
>
> --Bill

=46or our neuroimagery lib, i had to write some simples straightforward wra=
ppers=20
to the C-lib GSL, which you might be interested to have a quick look..=20
Trac entry:
http://projects.scipy.org/neuroimaging/ni/browser/fff/trunk/bindings/lightw=
rappers.h
http://projects.scipy.org/neuroimaging/ni/browser/fff/trunk/bindings/lightw=
rappers.c
and half-commented example usage..
http://projects.scipy.org/neuroimaging/ni/browser/fff/trunk/pythonTests/fff=
ctests/lightmoduleExample.c

=2D-
Benjamin Thyreau
CEA Orsay