pub fn checked_try_from_sexp_i64(sexp: SEXP) -> Result<i64, SexpError>Expand description
Convert R SEXP to i64 in strict mode.
Only INTSXP and REALSXP are accepted. RAWSXP and LGLSXP are rejected.
For REALSXP, uses TryCoerce to reject fractional, NaN, and out-of-range
values; NA is rejected too.