Re: [f2py] integers = 2226756?

            Thanks for the help and strange indeed. After some more research
this appears to be platform dependent. I'm using f2py on Win 7 64-bit (which
seems to be its least favorite platform) with the Intel compiler suite
(12.0) and VS 2010. Using the same compilers on the same system in Linux
(CentOS 5.5) the test module works fine, integers are passed with the
correct value. 

I did have to do a bit of hacking in the mscv9compiler.py and intel.py files
to get the flags to match up for proper linking, but none of the flags I
tweaked should, as far as I can tell, impact the passing of basic data types
(almost all linker flags). I did switch the !f2py directive in and out with
no effect. My first thought was a 32-bit / 64-bit setting somewhere in the
maze of dependencies between VS and the Intel compilers on 64-bit platforms
but so far no luck. I will run the test suggested and report results. 

 

            Thanks,

            ~Mike C.   

 

From: f2py-users-bounces-Y4l6ocDipWCuvFJfX82//[email protected] [mailto:f2py-users-bounces-Y4l6ocDipWCuvFJfX82//[email protected]]
On Behalf Of [email protected]
Sent: Wednesday, March 23, 2011 11:26 PM
To: For users of the f2py program
Subject: Re: [f2py] integers = 2226756?

 

This is strange. I'm not able to reproduce it with gfortran=4:4.5.2-2
python-numpy=1:1.4.1-5 in Debian. It can put in int8-int64 without problems.
What compiler are you using? What version of f2py? It might be worthwhile
looking at the automatically generated C code (what you get running f2py
without -c) to see what's happening.
The "f2py_rout_test_test" in particular would be of interest.

Kevin

On , Michael Colonno <mcolonno-FGKo4X94FMn2fBVCVOL8/[email protected]> wrote:
> 
>             Hi ~
>  
>             I have what I hope is a very simple issue with integers. My
extremely simple F90 code: 
>  
> subroutine test(N) 
>  
>     implicit none
>  
> !f2py integer, intent(in) :: N
>     integer                 :: N
>  
>     print *, "N = ", N
>  
> end subroutine
>             
>             I compile this with F2PY and get in Python:
>  
> >>> import test
> >>> test.test(13)
> N =      2226756
> >>> N = 7
> >>> test.test(N)
> N =      2226756
>  
> I get the same value for any value I input. If I change the argument N to
a real, I get the correct value. Is there some kind of incompatibility re:
integers from Python? Please let me know if I'm going crazy. 
>  
>             Thanks,
>             ~Mike C. 
> 
>

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