Function Rf_topenv_unchecked 

pub unsafe extern "C-unwind" fn Rf_topenv_unchecked(
    target: SEXP,
    envir: SEXP,
) -> SEXP

Get the top-level environment.

Walks up enclosing environments until reaching a top-level env (global, namespace, or base). Unchecked FFI binding for Rf_topenv. Generated from source location line 2077, column 12. Generated from source file miniextendr-api/src/sys.rs.