[Numpy-discussion] Weave Ext_tools converters not working??

Nadav Horesh nadavh@visionsense....
Mon Nov 17 12:09:47 CST 2008


On Mon, 2008-11-17 at 15:42 +0100, Søren Nielsen wrote:
why 
                    test(x,y) = 2;
and not
                    test[x][y] = 2;
?

  Nadav

> Can anyone explain why this fails? This piece of code runs perfectly
> using weave.inline and type_converters = blitz..
> 
> Obviously it can't handle 2D arrays anymore. It's just a stupid
> example to illustrate that. 
> 
> Thanks,
> Soren
> 
> CODE :
> ------------------------------------------------------------------------------------------------
> 
> mod = ext_tools.ext_module('ravg_ext')
> 
> test = zeros((5,5))
> xlen = 5
> ylen = 5
>     
> code = """
>          int x, y;
> 
>          for( x = 0; x < xlen; x++)
>          {
>                 for( y = 0; y < ylen; y++)
>                 {
>                     test(x,y) = 2;
>                 }
>          }
> 
>         """
>  
> ravg = ext_tools.ext_function('ravg', code, ['xlen', 'ylen',
> 'test'])    
> mod.add_function(ravg)
> mod.compile(compiler = 'gcc')
> 
> RESULT:
> ------------------------------------------------------------------------------------------------
> C:\Temp\ravg_ext.cpp: In function `PyObject* ravg(PyObject*,
> PyObject*, PyObject*)':
> C:\Temp\ravg_ext.cpp:654: error: `test' cannot be used as a function
> C:\Temp\ravg_ext.cpp:641: warning: unused variable 'Ntest'
> C:\Temp\ravg_ext.cpp:642: warning: unused variable 'Stest'
> C:\Temp\ravg_ext.cpp:643: warning: unused variable 'Dtest'
> 
> Traceback (most recent call last):
>   File "C:\Temp\ravg_extension.py", line 132, in ?
>     build_ravg_extension()
>   File "C:\Temp\ravg_extension.py", line 125, in build_ravg_extension
>     mod.compile(compiler = 'gcc')
>   File "C:\Python24\Lib\site-packages\scipy\weave\ext_tools.py", line
> 365, in compile
>     verbose = verbose, **kw)
>   File "C:\Python24\Lib\site-packages\scipy\weave\build_tools.py",
> line 269, in build_extension
>     setup(name = module_name, ext_modules = [ext],verbose=verb)
>   File "C:\Python24\Lib\site-packages\numpy\distutils\core.py", line
> 184, in setup
>     return old_setup(**new_attr)
>   File "C:\Python24\Lib\distutils\core.py", line 166, in setup
>     raise SystemExit, "error: " + str(msg)
> CompileError: error: Command "g++ -mno-cygwin -O2 -Wall -IC:\Python24
> \lib\site-packages\scipy\weave -IC:\Python24\lib\site-packages\scipy
> \weave\scxx -IC:\Python24\lib\site-packages\numpy\core\include -IC:
> \Python24\include -IC:\Python24\PC -c C:\Temp\ravg_ext.cpp -o c:
> \docume~1\ssn\locals~1\temp\ssn\python24_intermediate
> \compiler_894ad5ed761bb51736c6d2b7872dc212\Releas
> 
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