Comment #34 on issue 1598 by smichr: New polynomials manipulation module
http://code.google.com/p/sympy/issues/detail?id=1598
I'm running on polys3 and observe the following:
>>> n
6*(-a + x**2)**8*(-a - 3*x**2) - 48*x**3*(-a + x**2)**6*(a*x + x**3) +
24*x*(-a +
x**2)**7*(a*x + x**3) + 24*x**2*(-a + x**2)**7*(a + 3*x**2) - 36*x**2*(-a +
x**2)**8
+ 6*(-a + x**2)**9
>>> factor(n)
Traceback (most recent call last):
File "<interactive input>", line 1, in <module>
File "C:\Documents and Settings\chris\sympy\sympy\polys\polytools.py",
line 1854,
in factor
coeff, factors = _factor(f)
File "C:\Documents and Settings\chris\sympy\sympy\polys\polytools.py",
line 1846,
in _factor
(coeff, factors), result = F.factor_list(**args), S.One
File "C:\Documents and Settings\chris\sympy\sympy\polys\polytools.py",
line 1099,
in factor_list
result = f.rep.factor_list(**args)
File "C:\Documents and Settings\chris\sympy\sympy\polys\polyclasses.py",
line 1419,
in factor_list
coeff, factors = dmp_factor_list(f.rep, f.lev, f.dom, **args)
File "C:\Documents and Settings\chris\sympy\sympy\polys\factortools.py",
line 1031,
in dmp_factor_list
coeff, factors = _dmp_inner_factor(f, u, K)
File "C:\Documents and Settings\chris\sympy\sympy\polys\factortools.py",
line 999,
in _dmp_inner_factor
coeff, factors = dmp_zz_factor(f, v, K)
File "C:\Documents and Settings\chris\sympy\sympy\polys\factortools.py",
line 923,
in dmp_zz_factor
sign, H = dmp_zz_wang(g, u, K)
File "C:\Documents and Settings\chris\sympy\sympy\polys\factortools.py",
line 848,
in dmp_zz_wang
raise NotImplementedError("if this happened we need an extra loop here")
NotImplementedError: if this happened we need an extra loop here
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