On Nov 14, 2007 8:21 PM, <[EMAIL PROTECTED]> wrote:
> You could also use the Decimal module to keep things accurate. Some
> people like numpy or scipy for the more complex math problems they do.
Unlike mpmath, the decimal module doesn't support non-integer powers
(except for square roots), and nor does gmpy (though you can do them
indirectly as mensanator showed earlier in the thread). And numpy /
scipy don't support arbitrary-precision floats.
Now, if you really want exact arithmetic, SymPy is the winner:
>>> from sympy import *
>>> x = 1234 ** Rational('10.9')
>>> x
8187505353567209228244052427776*1234**(9/10)
>>> x / 1234**10
1234**(9/10)
>>> x.evalf()
4.958327864815504147741523444E+33
Fredrik
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