Expand description
Coerced scalar conversions (multi-source numeric) and large integer scalars.
These types accept multiple R source types (INTSXP, REALSXP, RAWSXP, LGLSXP)
and coerce to the target Rust type via TryCoerce.
Covers: i8, i16, u16, u32, f32 (sub-native scalars) and
i64, u64, isize, usize (large integers via f64 intermediary).