Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1482 by smichr: LambertW evalf with E in arg
http://code.google.com/p/sympy/issues/detail?id=1482
E can be evaluated, LambertW(1) can, too, but not LambertW(1+E):
>>> E.evalf()
2.71828182845905
>>> LambertW(1).evalf()
0.567143290409784
>>> LambertW(1 + E).evalf()
Traceback (most recent call last):
File "<interactive input>", line 1, in <module>
File "core\evalf.py", line 1013, in Basic_evalf
v = x._eval_evalf(prec)
File "core\function.py", line 227, in _eval_evalf
args = [arg._to_mpmath(prec) for arg in self.args]
File "core\basic.py", line 1997, in _to_mpmath
v = self._eval_evalf(prec)
File "core\basic.py", line 1990, in _seq_eval_evalf
return self.__class__(*[s._evalf(prec) for s in self.args])
File "core\basic.py", line 1981, in _evalf
r = self._eval_evalf(prec)
File "core\numbers.py", line 1297, in _eval_evalf
return Real._new(self._as_mpf_val(prec), prec)
File "core\numbers.py", line 1369, in _as_mpf_val
return mlib.fe(prec)
AttributeError: 'module' object has no attribute 'fe'
/c
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