On Fri, Mar 19, 2010 at 7:54 PM, Ted Horst <ted.ho...@earthlink.net> wrote:
>
> On 2010-03-17, at 21:28, Ondrej Certik wrote:
>
>> Hi,
>>
>> we just fixed the last bugs in the Mateusz's polys branch and pushed
>> it in our main git repo. All tests pass for all kinds of
>> configurations that I tried, but if possible, please test it (I didn't
>> test on Mac nor Windows).
>>
>> Just to get some idea, Mateusz did about 150 patches and it implements
>> all kinds of polynomial algorithms, see e.g. this patch for some
>> details:
>>
>>
>> http://git.sympy.org/?p=sympy.git;a=commit;h=31c9aa43ffc7bc031493fc4ea27b74dc50c4d035
>>
>> It should fix all kinds of bugs and also it's quite fast and robust.
>> E.g. this failed:
>>
>> In [1]: f = expand((x+y+z)**20)
>>
>> In [2]: factor(f)
>> Out[2]:
>>          20
>> (x + y + z)
>>
>> and now it works.
>>
>> Plus the core polynomials are cythonized in pure Cython mode (so far
>> only about 2x speedup), but I think we'll figure out ways to speed it
>> up more using Cython.
>>
>> Ondrej
>>
>
> I was excited to see the first cython bits in the main repo, but I am having
> a few problems.
>
> I'm on a ppc mac running 10.5.8 and using the system python 2.5.1 and the
> latest head of cython (12507ec6fa91) from http://hg.cython.org/cython-devel.
>
> First, it looks like lambda is not supported by this version of cython
> (error below).  Are you using the cython-closure branch?
>
> Second, it looks like the cythonized decorator is not having the desired
> effect.  I'm guessing this is because the cython.locals decorator has to
> actually be seen by cython (the decorator itself doesn't do anything).
>  Could this be done using a pxd file?

I just tried the same Cython head and I am getting the exact same
cython error as you do.

Mateusz, how should we get this working? Last time I tried it was at
the scipy conference and it worked, but it was just some prototype.

Ondrej

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