[Gsll-devel] make-marray, :cl-array keyword

[Mirko Vukovic]

On Thu, Apr 15, 2010 at 10:13 PM, Liam Healy <lhealy at common-lisp.net> wrote:
> No, not really.  :cl-array was put in for internal use, and
> I tried after you posted to comp.lang.lisp (I'm assuming
> you are allchemist) and it doesn't work.  I'll need to clean
> that up.  I think your use of :data is on the right track
> but you'll have to make your array with c-array:make-ffa
> if you want to use it in GSL.
>
> In general I think it would be a good idea to be able
> easily go back and forth between CL and marrays.

1+  (or equivalently (incf *interested-in-this-issue*))

> I'm not sure the best way to do that at present and
> what changes need to be made.  I'll have to think about
> it.   Unfortunately I won't be able to get to this for a
> while.
>
> Liam
>
>
> On Wed, Apr 14, 2010 at 4:26 PM, ivan hohlov <hohlovivan at gmail.com> wrote:
>> Hi all!
>>
>> There is a keyword :cl-array for the gsll:make-marray function. Can I
>> use it to convert native lisp array into marray?
>> I'm trying to do this:
>> (defparameter *m* (make-array '(3 3)
>>                              :element-type 'single-float
>>                              :initial-contents '((1.0 2.0 3.0)
>>                                                  (4.0 5.0 6.0)
>>                                                  (7.0 8.0 9.0))))
>> (gsll:make-marray 'single-float :dimensions '(3 3) :cl-array *m*)
>> leads to error "Invalid initialization argument: :cl-array". (sbcl, of course)
>> Am I right, using :cl-array in such a way? I have searched for
>> examples with thes key, but found nothing.
>>
>> Also, if I use :data key instead of :cl-array, it works, but tue
>> resulting marray couldn't be used in common routines, such as matrix
>> multiplication, because it isn't simple-array.
>>
>> To generalize the problem - Is it possible to convert lisp array to
>> gsll marray without copying data?
>>
>> Thanks
>
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