[R] The gamma function and infinity

[Peter Dalgaard]

Florent Bresson <f_bresson at yahoo.fr> writes:

> I have to calculate some formula like:
> 
> gamma(x)/(gamma(x+y)
> 
> and I observed that for relatively big values of x, R
> returns infinity and so cannot compute the formula. Is
> it possible to force  R to give the real value of
> gamma(x) instead of Inf ?

No, it is overflowing the floating point representation.

How about using lgamma? That's basically what it is for.

-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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