[cffi-devel] How to define a pointer to a 2d array
I have a function that accepts a void* as a parameter Im trying to convert this to use as the void* float trainingData[4][2] = { {501, 10}, {255, 10}, {501, 255}, {10, 501} }; this is how i do a void* 1d array float labels[4] = {1.0, -1.0, -1.0, -1.0}; (labels (foreign-alloc :float :initial-contents '(1.0 -1.0 -1.0 -1.0))) so how do i do the 2d array
On Sat, Nov 23, 2013 at 1:09 AM, Joeish W <joeish80829@yahoo.com> wrote:
(labels (foreign-alloc :float :initial-contents '(1.0 -1.0 -1.0 -1.0)))
so how do i do the 2d array
Have a look at the undocumented foreign-array-alloc function. HTH, -- Luís Oliveira http://kerno.org/~luis/
since it is undocumented can you show me how to use it in this context...plus i notice in src/types.lisp where foreign-array-alloc is located there are a few undocumented functions how would I learn to use them. On Saturday, November 23, 2013 4:49 PM, Luís Oliveira <loliveira@common-lisp.net> wrote: On Sat, Nov 23, 2013 at 1:09 AM, Joeish W <joeish80829@yahoo.com> wrote:
(labels (foreign-alloc :float :initial-contents '(1.0 -1.0 -1.0 -1.0)))
so how do i do the 2d array
Have a look at the undocumented foreign-array-alloc function.
HTH,
-- Luís Oliveira http://kerno.org/~luis/
since it is undocumented can you show me how to use it in this context...plus i notice in src/types.lisp where foreign-array-alloc is located there are a few undocumented functions how would I learn to use them. On Saturday, November 23, 2013 4:49 PM, Luís Oliveira <loliveira@common-lisp.net> wrote: On Sat, Nov 23, 2013 at 1:09 AM, Joeish W <joeish80829@yahoo.com> wrote:
(labels (foreign-alloc :float :initial-contents '(1.0 -1.0 -1.0 -1.0)))
so how do i do the 2d array
Have a look at the undocumented foreign-array-alloc function.
HTH,
-- Luís Oliveira http://kerno.org/~luis/
participants (2)
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Joeish W -
Luís Oliveira