Function Rf_charIsUTF8_unchecked 

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

Unchecked FFI binding for Rf_charIsUTF8. Generated from source location line 1981, column 8. Generated from source file miniextendr-api/src/ffi.rs.