[R] Help for numbers close to 1 in R

[cjmr]

Hi all.

I have a problem with adding 1 and very small numbers

ex:
>p=1e-49
>1+p
[1] 1

My problem comes from some values of x for the value:
    1-exp(-sum((x-1/sqrt(3))^2))
the return values are always equivalent.

Please help
Thanks
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