Function Rf_S3Class_unchecked 

pub unsafe extern "C-unwind" fn Rf_S3Class_unchecked(
    object: SEXP,
) -> SEXP

Get the S3 class of an S4 object. Unchecked FFI binding for Rf_S3Class. Generated from source location line 2131, column 12. Generated from source file miniextendr-api/src/sys.rs.