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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