Hi,
Probably better to:
(1) Ask this on the numpy mailing list, and
(2) Provide a complete, compilable example of the offending code.
Also, you may find it easier to write a pure-C routine and call into
it using ctypes (getting pointers via numpy arrays' ctypes
attributes), or alternately, use cython to write the routine.
Zach
On Feb 24, 2010, at 10:28 AM, brennsuppa wrote:
Hi,
I want to gain performance by using C for the computation of some
arrays.
To do that I used this as a help:
http://www.scipy.org/Cookbook/C_Extensions/NumPy_arrays
Now I want to wirte a subroutine for the calculations with several
arrays.
But I don't know how to pass the arrays to the subroutine.
e.g. i have cin1, cin2, cin3, cin4 and cout
cout = do_anything(cin1, cin2, cin3, cin4)
and do_anything would be like:
double **do_anything(cin1[][n], cin2[][n], cin3[][n], cin4[][n])
for rows
for columns
add cin1,cin2,cin3,cin4
return value
this throws an error "conflicting types for do_anything"
regards,
joe
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