Display exact value of a variable in R
Globally solution during all the session
options(digits=16)
> x
[1] 1.00042589212565
or locally just for x:
sprintf("%.16f", x)
[1] "1.0004258921256499"
print(x, digits=15)
or
format(x, digits=15)
or
sprintf("%.14f", x)