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Re: st: RE: large numbers in comb(n,k) function: no success


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: large numbers in comb(n,k) function: no success
Date   Thu, 5 Feb 2009 11:31:58 +0000 (GMT)

--- On Thu, 5/2/09, Inna Becher wrote:
> unfortunately could lnfactorial not manage the problem as
> well...

-lnfactorial()- can handle that problem as long as you don't 
-exp()- it:

di lnfactorial(180000) - (lnfactorial(2000)) + lnfactorial(180000-2000)

In many situations where these numbers show up you can apply 
some tricks to make these number much more manageable, but 
the trick depends on the specific situation. If you tells us 
why you want to access this number, we may be able to help you. 

-- Maarten 

-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room N515

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------





      

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