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From: sam@kalessin.jpl.nasa.gov (Sam Sirlin)
Newsgroups: comp.lang.apl
Subject: Re: Factorials in J
Message-ID: <1991Mar13.184033.25957@jato.jpl.nasa.gov>
Date: 13 Mar 91 18:40:33 GMT
References: <1991Mar9.040541.28914@aplcen.apl.jhu.edu> <1991Mar11.202526.20774@jato.jpl.nasa.gov> <1991Mar13.042856.23984@aplcen.apl.jhu.edu>
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In article <1991Mar13.042856.23984@aplcen.apl.jhu.edu>, simpson@aplcen.apl.jhu.edu (Simpson David Grant) writes:

|> I got these results with J version 3 for the PC, running on my
|> Zeos 386.  I tried this same software today on an IBM AT (80286)
|> with different results -- it hangs the computer for !174, but 
|> does not answer "1" for every factorial like my 386 does.
|> 

I tried this in version 2.9 on IBM PCAT and Everex 386. The pc version 
of 2.9 doesn't have infinity, and both machines give domain errors for  
factorial arguments > 170, but work fine afterwards. Maybe you should 
grab 2.9 from watserv. The sun4 version of 2.9 seems to have a limited 
implementation of infinity.

-- 
Sam Sirlin
Jet Propulsion Laboratory         sam@kalessin.jpl.nasa.gov