Comment #22 on issue 1374 by asmeurer: simplify(x**2-x**2.0) does not yield
0.
http://code.google.com/p/sympy/issues/detail?id=1374
Right now we have
In [7]: 2.0 == 2
Out[7]: True
In [8]: S(2.0) == S(2)
Out[8]: True
In [9]: x**2.0 == x**2
Out[9]: True
In [14]: x**2.0 - x**2
Out[14]:
2 2.0
- x + x
In [20]: 1.0 == 1
Out[20]: True
In [21]: S(1.0) == S(1)
Out[21]: True
In [22]: x**1.0 == x**1
Out[22]: False
In [23]: x**1.0 - x
Out[23]:
1.0
-x + x
So this is very inconsistant.
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