Function Rf_charIsUTF8_unchecked 

pub unsafe extern "C-unwind" fn Rf_charIsUTF8_unchecked(
    x: SEXP,
) -> Rboolean

Unchecked FFI binding for Rf_charIsUTF8. Generated from source location line 330, column 12. Generated from source file miniextendr-api/src/sys.rs.