[R] is.nan() errors on non-floating point data

[asfimport]

In R, is.nan() can be called on a vector of any type and will return FALSE at every position for non-floating point number vectors. For consistency, the is.nan() binding in the arrow R package should work this way too, but currently it throws an error if called on a non-floating point field.

Reporter: Ian Cook / @ianmcook
Assignee: Ian Cook / @ianmcook

Related issues:

• [R] is.nan() evaluates to null on Arrow null values (relates to)

_{Note: This issue was originally created as ARROW-13363. Please see the migration documentation for further details.}

[asfimport]

Ian Cook / @ianmcook:
There is a fix for this in #10724.