On 04/12/2012 11:51 PM, Dag Sverre Seljebotn wrote:
On 04/12/2012 11:13 PM, Travis Oliphant wrote:
Dag,
Thanks for the link to your CEP. This is the first time I've seen it. You
probably referenced it before, but I hadn't seen it.
That CEP seems along the lines of what I was thinking
Thanks for the status update. A couple of weeks is a fine timeline to wait.
Are you envisioning that the ufuncs in NumPy would have the nativecall
attribute?
--
Travis Oliphant
(on a mobile)
512-826-7480
On Apr 19, 2012, at 6:00 AM, Dag Sverre Seljebotn d.s.seljeb...@astro.uio.no
wrote:
On 04/19/2012 04:17 PM, Travis Oliphant wrote:
Thanks for the status update. A couple of weeks is a fine timeline to wait.
Are you envisioning that the ufuncs in NumPy would have the nativecall
attribute?
I'm envisioning that they would be able to support CEP 1000, yes, but I
don't think
Example:
lib = ctypes.CDLL('libm.dylib')
address_as_integer = ctypes.cast(lib.sin, ctypes.c_void_p).value
Excellent!
Sorry for the hijack, thanks for rhe ride,
Nadav.
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NumPy-Discussion mailing list
On Wed, Apr 11, 2012 at 10:23 PM, Travis Oliphant teoliph...@gmail.com wrote:
In the mean-time, I think we could do as Robert essentially suggested and
just use Capsule Objects around an agreed-upon simple C-structure:
int id /* Some number that can be used as a type-check */
On 04/12/2012 07:24 PM, Nathaniel Smith wrote:
On Wed, Apr 11, 2012 at 10:23 PM, Travis Oliphantteoliph...@gmail.com
wrote:
In the mean-time, I think we could do as Robert essentially suggested and
just use Capsule Objects around an agreed-upon simple C-structure:
int id /* Some
Dag,
Thanks for the link to your CEP. This is the first time I've seen it. You
probably referenced it before, but I hadn't seen it.
That CEP seems along the lines of what I was thinking of.We can make scipy
follow that CEP and NumPy as well in places that it needs function pointers.
On 04/12/2012 11:13 PM, Travis Oliphant wrote:
Dag,
Thanks for the link to your CEP. This is the first time I've seen it. You
probably referenced it before, but I hadn't seen it.
That CEP seems along the lines of what I was thinking of.We can make
scipy follow that CEP and NumPy as
On Apr 12, 2012, at 4:51 PM, Dag Sverre Seljebotn wrote:
On 04/12/2012 11:13 PM, Travis Oliphant wrote:
Dag,
Thanks for the link to your CEP. This is the first time I've seen it. You
probably referenced it before, but I hadn't seen it.
That CEP seems along the lines of what I was
On 04/12/2012 11:55 PM, Travis Oliphant wrote:
On Apr 12, 2012, at 4:51 PM, Dag Sverre Seljebotn wrote:
On 04/12/2012 11:13 PM, Travis Oliphant wrote:
Dag,
Thanks for the link to your CEP. This is the first time I've seen it.
You probably referenced it before, but I hadn't seen it.
On 04/10/2012 02:11 AM, Travis Oliphant wrote:
Hi all,
Some of you are aware of Numba. Numba allows you to create the equivalent
of C-function's dynamically from Python. One purpose of this system is to
allow NumPy to take these functions and use them in operations like ufuncs,
On 04/10/2012 02:11 AM, Travis Oliphant wrote:
Hi all,
Some of you are aware of Numba. Numba allows you to create the equivalent
of C-function's dynamically from Python. One purpose of this system is to
allow NumPy to take these functions and use them in operations like ufuncs,
On 04/11/2012 11:00 PM, Travis Oliphant wrote:
On 04/10/2012 02:11 AM, Travis Oliphant wrote:
Hi all,
Some of you are aware of Numba. Numba allows you to create the equivalent
of C-function's dynamically from Python. One purpose of this system is to
allow NumPy to take these functions
Thoughts?
I really hope we can find some project-neutral common ground, so that lots
of tools (Cython, f2py, numba, C extensions in NumPy and SciPy) can agree
on how to unbox callables.
A new extension type in NumPy would not fit this bill I feel. I've created
a specification for
On Tue, Apr 10, 2012 at 1:57 AM, Travis Oliphant tra...@continuum.io wrote:
On Apr 9, 2012, at 7:21 PM, Nathaniel Smith wrote:
...isn't this an operation that will be performed once per compiled
function? Is the overhead of the easy, robust method (calling ctypes.cast)
actually measurable as
On Tue, Apr 10, 2012 at 01:11, Travis Oliphant teoliph...@gmail.com wrote:
1) Create an API for such Ctypes function pointers in NumPy and use
the ctypes object structure. If ctypes were to ever change it's object
structure we would have to adapt this API.
Something like
Hi Travis,
we've been discussing almost the exact same thing in Cython (on a
workshop, not on the mailing list, I'm afraid). Our specific
example-usecase was passing a Cython function to scipy.integrate.
On 04/10/2012 02:57 AM, Travis Oliphant wrote:
On Apr 9, 2012, at 7:21 PM, Nathaniel
On 04/10/2012 12:37 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:57 AM, Travis Oliphanttra...@continuum.io wrote:
On Apr 9, 2012, at 7:21 PM, Nathaniel Smith wrote:
...isn't this an operation that will be performed once per compiled
function? Is the overhead of the easy, robust
On Tue, Apr 10, 2012 at 1:39 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 12:37 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:57 AM, Travis Oliphanttra...@continuum.io wrote:
On Apr 9, 2012, at 7:21 PM, Nathaniel Smith wrote:
...isn't this an operation that
On 04/10/2012 03:00 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:39 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 12:37 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:57 AM, Travis Oliphanttra...@continuum.io
wrote:
On Apr 9, 2012, at 7:21 PM,
On 04/10/2012 03:10 PM, Dag Sverre Seljebotn wrote:
On 04/10/2012 03:00 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:39 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 12:37 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:57 AM, Travis
On Tue, Apr 10, 2012 at 2:15 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 03:10 PM, Dag Sverre Seljebotn wrote:
On 04/10/2012 03:00 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:39 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012
On 04/10/2012 03:29 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 2:15 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 03:10 PM, Dag Sverre Seljebotn wrote:
On 04/10/2012 03:00 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 1:39 PM, Dag Sverre Seljebotn
On 04/10/2012 03:38 PM, Dag Sverre Seljebotn wrote:
On 04/10/2012 03:29 PM, Nathaniel Smith wrote:
On Tue, Apr 10, 2012 at 2:15 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 03:10 PM, Dag Sverre Seljebotn wrote:
On 04/10/2012 03:00 PM, Nathaniel Smith wrote:
On
On Tue, Apr 10, 2012 at 2:38 PM, Dag Sverre Seljebotn
d.s.seljeb...@astro.uio.no wrote:
On 04/10/2012 03:29 PM, Nathaniel Smith wrote:
Right, that's what I wasn't getting until you mentioned strcmp :-).
That said, the core numpy dtypes are singletons. For this purpose, the
signature could be
library?
Nadav.
From: numpy-discussion-boun...@scipy.org [numpy-discussion-boun...@scipy.org]
On Behalf Of Travis Oliphant [teoliph...@gmail.com]
Sent: 10 April 2012 03:11
To: Discussion of Numerical Python
Subject: [Numpy-discussion] Getting C-function
.
_
From: numpy-discussion-boun...@scipy.org [numpy-discussion-boun...@scipy.org]
On Behalf Of Travis Oliphant [teoliph...@gmail.com]
Sent: 10 April 2012 03:11
To: Discussion of Numerical Python
Subject: [Numpy-discussion] Getting C-function pointers from Python to C
Hi all
To: Discussion of Numerical Python
Subject: [Numpy-discussion] Getting C-function pointers from Python to C
Hi all,
Some of you are aware of Numba. Numba allows you to create the equivalent
of C-function's dynamically from Python. One purpose of this system is to
allow NumPy to take
Hi all,
Some of you are aware of Numba. Numba allows you to create the equivalent of
C-function's dynamically from Python. One purpose of this system is to allow
NumPy to take these functions and use them in operations like ufuncs,
generalized ufuncs, file-reading, fancy-indexing, and so
...isn't this an operation that will be performed once per compiled
function? Is the overhead of the easy, robust method (calling ctypes.cast)
actually measurable as compared to, you know, running an optimizing
compiler?
I mean, I doubt there'd be any real problem with adding this extra API to
On Apr 9, 2012, at 7:21 PM, Nathaniel Smith wrote:
...isn't this an operation that will be performed once per compiled function?
Is the overhead of the easy, robust method (calling ctypes.cast) actually
measurable as compared to, you know, running an optimizing compiler?
Yes, there can
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