[f2py] Problem with inplace modification of an integer array

I am trying to modify an integer array in Fortran, which I am passing from
Python. Essentially my problem can be seen in the following code.

Fortran77 code:

c       temp.f

         subroutine tgam(gam,k)
         implicit none
         integer k, gam(k)
cf2py intent(inout) gam
cf2py intent(in) k
         gam(2)=1
         end

I am running 64 bit Ubuntu and compiling the code:
f2py -c temp.f -m temp

I am calling this code from Python 2.6.4 as follows:
import temp
from numpy import*

gamvec=array([1,0,0])
temp.tgam(gamvec)
print gamvec

I receive the following error message:
Traceback (most recent call last):
  File "testtemp.py", line 5, in <module>
    temp.tgam(gamvec)
ValueError: failed to initialize intent(inout) array -- expected elsize=4
but got 8

Any help with this problem will be greatly appreciated.
Regards,
Chris.

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