Em 8 de novembro de 2011 04:20, Paulo César Pereira de Andrade
<paulo.cesar.pereira.de.andr...@gmail.com> escreveu:
> 2011/11/7 Francois Bissey <francois.bis...@canterbury.ac.nz>:
>
>> Hi Paulo,
>>
>> You are using python-2.7 right? In #9958 I have a list of patches
>> as long as my arm to deal with the numerical noise and changes
>> in warnings.
>
> Yes, python 2.7.2. Thanks for the hint on the patches. They appear
> to address exactly a good share of the doctest failures I noticed.
>
>> For mpmath/sympy in gentoo we are now using sympy-0.7.1 with
>> the patches I wrote. This will land in sage-4.8.0 proper. Now for
>> Gentoo I wrote a sympy package in which I removed mpmath and
>> forced sympy to use the system mpmath.
>> http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-
>> python/sympy/sympy-0.7.1.ebuild?revision=1.2&view=markup
>> and:
>> http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-
>> python/sympy/files/sympy-0.7.1-mpmath.patch?revision=1.1&view=markup
>
> I am going to use these patches also.
With the sympy/mpmath patches, I can drop a hack I have been rediff'ing
for some time, but anything that uses mpmath now shows a lot of warnings
like these:
sage -t -force_lib "devel/sage/sage/libs/mpmath/ext_main.pyx"
*** glibc detected *** python: realloc(): invalid pointer:
0x0000000003b4d3c0 ***
...
*** glibc detected *** python: realloc(): invalid pointer:
0x00000000042465c0 ***
*** glibc detected *** python: free(): invalid pointer: 0x0000000003b4d3a0 ***
*** glibc detected *** python: free(): invalid pointer: 0x00000000035c86f0 ***
[3.8 s]
Previously there was only one test case with this behavior, but now it
works with some test cases that would fail, most notably this:
TypeError: object.__new__(sage.libs.mpmath.ext_main.mpc) is not
safe, use sage.libs.mpmath.ext_main.mpc.__new__()
that now works.
But this one got a lot larger numeric variation, now:
File "/usr/share/sage/devel/sage/sage/libs/mpmath/utils.pyx", line 367:
sage: a.call(a.polylog, 2, 1/3+4/5*I)
Expected:
0.153548951541433 + 0.875114412499637*I
Got:
0.254715070352197 + 0.874801794256724*I
and before:
File "/usr/share/sage/devel/sage/sage/libs/mpmath/utils.pyx", line 367:
sage: a.call(a.polylog, 2, 1/3+4/5*I)
Expected:
0.153548951541433 + 0.875114412499637*I
Got:
0.159841737717642 + 0.875386092681844*I
Thanks,
Paulo
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