[R] factorial(), modulus()

Thomas Lumley thomas at biostat.washington.edu
Thu Jul 6 19:19:33 CEST 2000

On Thu, 6 Jul 2000, Pete Hurd wrote:

> Dear R friends,
> I was wondering if there were factorial and modulus functions out there
> that I've somehow overlooked?

There's  gamma and lgamma for factorials

gamma(x+1) is x! and lgamma(x+1) is log(x!).  Also choose() and
lchoose() for the binomial coefficients.

x %% y does x mod y.


Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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