math.pow(x,y)

[Raymond L. Buvel]

Felipe Almeida Lessa wrote:
> Em Dom, 2006-06-11 às 11:19 -0700, fl1p-fl0p escreveu:
>> import math
>> math.pow(34564323, 456356)
>>
>> will give math range error.
>>
>> how can i force python to process huge integers without math range
>> error? Any modules i can use possibly?
> 
> 34564323**456356 ?
> 

I just tried this and it is taking an extremely long time even on a fast
machine with 4 Gb of RAM.  Killed it after a couple of minutes.  This
sort of calculation can be done with extended precision floating point
(as long as you don't need an exact answer).  For example (using
defaults on a 64-bit machine),

>>> from clnum import mpf
>>> mpf(34564323)**456356
mpf('1.39518106833639480699862472257296396643e3440298',36)

compute time is about 160 microseconds.

For more information see

http://calcrpnpy.sourceforge.net/clnumManual.html

For calculations involving large powers, you may still be better off
using logarithms.