[R] 16 digits and beyond? R64-bit a solution?

[Aldi Kraja]

Hi,

I am working with some extremely small p-values and I want to capture 
the corresponding quantiles.

I see the help file it says:
     'qnorm' is based on Wichura's algorithm AS 241 which provides
     precise results up to about 16 digits.

What happen after the 16th digits?

If I am running R in a server 64-bit, can that improve the chances that 
beyond 16th digits to still have precision?

Thanks,

Aldi

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