Infinite value

[Kirill Simonov]

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In <37F1B9F2.11DB2AC at ust.hk> David YEUNG (dyeung at ust.hk) wrote:
> Does python support Infinity value, like the 'Inf' in Matlab and C ?

Recently, I implemented infinity value.
Examples:

>>> from infarith import infinity
>>> l = [1,2,-1,infinity,infinity,-infinity]
>>> l.sort()
>>> l
[(-infinity), -1, 1, 2, (+infinity), (+infinity)]
>>> -1*infinity
(-infinity)
>>> infinity - 1
(+infinity)
>>> infinity/infinity
Traceback (innermost last):
  File "<stdin>", line 1, in ?
  File "infarith.py", line 58, in __div__
    raise InfinityError, "infinity / infinity"
infarith.InfinityError: infinity / infinity
>>> infinity > 100000000000000000000000000000000000000000L
1

Kirill.
Donetsk State University, Ukraine.


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