Comment #8 on issue 3294 by [email protected]: RootOf.evalf hangs when
nroots returns instantaneously
http://code.google.com/p/sympy/issues/detail?id=3294
I guess not.
In [4]: In [25]: RootOf(f,0).evalf()
^C---------------------------------------------------------------------------
KeyboardInterrupt Traceback (most recent call last)
<ipython-input-4-187536984ed8> in <module>()
----> 1 RootOf(f,0).evalf()
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/evalf.py in
evalf(self, n, subs, maxn, chop, strict, quad, verbose)
1280 options['quad'] = quad
1281 try:
-> 1282 result = evalf(self, prec + 4, options)
1283 except NotImplementedError:
1284 # Fall back to the ordinary evalf
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/core/evalf.py in
evalf(x, prec, options)
1186 if 'subs' in options:
1187 x = x.subs(evalf_subs(prec, options['subs']))
-> 1188 re, im = x._eval_evalf(prec).as_real_imag()
1189 if re.has(re_) or im.has(im_):
1190 raise NotImplementedError
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/polys/rootoftools.py
in _eval_evalf(self, prec)
418 while True:
419 if self.is_real:
--> 420 x0 = mpf(str(interval.center))
421 else:
422 x0 = mpc(*map(str, interval.center))
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/polys/rootisolation.py
in
center(self)
1702 def center(self):
1703 """Return the center of the real isolating interval. """
-> 1704 return (self.a + self.b)/2
1705
1706 def as_tuple(self):
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/polys/domains/pythonrational.py
in
__div__(self, other)
171 return NotImplemented
172
--> 173 return self.__class__(p, q)
174
175 __truediv__ = __div__
/Users/aaronmeurer/Documents/Python/sympy/sympy/sympy/polys/domains/pythonrational.py
in
__init__(self, p, q)
58
59 while y:
---> 60 x, y = y, x % y
61
62 if x != 1:
KeyboardInterrupt:
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