[Numpy-discussion] f2py with int8

John Mitchell workalof@gmail....
Tue Apr 17 00:32:06 CDT 2012


Hi,

I am using f2py to pass a numpy array of type numpy.int8 to fortran.  It
seems like I am misunderstanding something because I just can't make it
work.

Here is what I am doing.

PYTHON
b=numpy.array(numpy.zeros(shape=(10,),dtype=numpy.int8),order='F')
b[0]=1
b[2]=1
b[3]=1
b
array([1, 0, 1, 1, 0, 0, 0, 0, 0, 0], dtype=int8)



FORTRAN
subroutine print_bit_array(bits,n)
   use iso_fortran_env
   integer,intent(in)::n
   integer(kind=int8),intent(in),dimension(n)::bits
   print*,'bits = ',bits
end subroutine print_bit_array


RESULT when calling fortran from python
bits =     1    0    0    0    0    0    0    0    1    0

Any Ideas?
thanks,
John
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.scipy.org/pipermail/numpy-discussion/attachments/20120416/0427799c/attachment.html 


More information about the NumPy-Discussion mailing list