Ondrej Certik write: > On Sat, Jan 17, 2009 at 10:15 AM, Dag Sverre Seljebotn > <da...@student.matnat.uio.no> wrote: >> Basically, perhaps one should allow declaring functions like this: >> >> cdef extern from "myheader.h": >> int myfunc(double[0:nrows, 0:ncols] data, int nrows, int ncols) >> >> (here data is really "double* data" in the C header) and then call it >> like this: >> >> cdef np.ndarray[double, ndim=2] arr = x >> myfunc(arr) > > I thought that's what the buffer interface (you implemented over the > summer) makes easy? Or you want to make it even easier. :)
The buffer interface in summer was about making writing numerical programs in Cython itself easy; it made sure that arr[i,j,k] compiles to something efficient in Cython. This is about making calling into external C libraries, which expects a pure double* or similar, easier; by allowing automatic coercion from Python buffer objects to pointers. At least at first I think it would only be allowed for declarations of external functions. It would of course build quite heavily on what I did in summer. Dag Sverre _______________________________________________ Cython-dev mailing list Cython-dev@codespeak.net http://codespeak.net/mailman/listinfo/cython-dev
