Comment #1 on issue 1868 by ondrej.certik: solve(floating point, x) stopped
working
http://code.google.com/p/sympy/issues/detail?id=1868
Now it does:
In [1]: EQN1 = -12.0* 12.0*(2*sqrt(3.0) + 9.0) + (78.0 + 24.0*sqrt(3.0)
)*x**2 -
3.0*sqrt(2.0) * x**3 - x**4
In [2]: solve(EQN1, x)
---------------------------------------------------------------------------
DomainError Traceback (most recent call last)
/home/ondrej/repos/sympy/<ipython console> in <module>()
/home/ondrej/repos/sympy/sympy/solvers/solvers.py in solve(f, *symbols,
**flags)
237 if poly.degree > 2:
238 flags['simplified'] = flags.get('simplified', False)
--> 239 result = roots(poly, cubics=True, quartics=True).keys()
240
241 elif strategy == GS_RATIONAL:
/home/ondrej/repos/sympy/sympy/polys/polyroots.py in roots(f, *gens,
**flags)
326 raise PolynomialError('multivariate polynomials are not
supported')
327
--> 328 f, x = f.to_field(), f.gen
329
330 def _update_dict(result, root, k):
/home/ondrej/repos/sympy/sympy/polys/polytools.py in to_field(f)
771 """Make the ground domain a field. """
772 try:
--> 773 result = f.rep.to_field()
774 except AttributeError: # pragma: no cover
775 raise OperationNotSupported(f, 'to_field')
/home/ondrej/repos/sympy/sympy/polys/polyclasses.py in to_field(f)
1151 def to_field(f):
1152 """Make the ground domain a field. """
-> 1153 return f.convert(f.dom.get_field())
1154
1155 def convert(f, dom):
/home/ondrej/repos/sympy/sympy/polys/algebratools.py in get_field(self)
1186 def get_field(self):
1187 """Returns a field associated with `self`. """
-> 1188 raise DomainError('there is no field associated with %s' %
self)
1189
1190 def get_exact(self):
DomainError: there is no field associated with RR
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