I would like to compute
Erf[80/3] to enough precision to know the order of magnitude of
1 - Erf[80/3]
How can I do that?
I think it's silly every time I type in something like
Erf[80/3] and Mathematica just returns the input as the output. I'd rather the output be the string "Cannot evaluate", which would at least be a useful message, although not as useful as one that includes a reason.
N[Erf, WorkingPrecision -> 10], and got the error message:
N::precbd: Requested precision WorkingPrecision->10 is not a machine-sized real number between \$MinPrecision and \$MaxPrecision.
Which I don't understand because
$MinPrecision returns 0 and
$MaxPrecision returns $\infty$, so I'm not sure why 10 is not a machine-sized real number between 0 and $\infty$.