Function libR_sys::Rf_arraySubscript

pub unsafe extern "C" fn Rf_arraySubscript(
    arg1: c_int, 
    arg2: SEXP, 
    arg3: SEXP, 
    arg4: Option<unsafe extern "C" fn(arg1: SEXP, arg2: SEXP) -> SEXP>, 
    arg5: Option<unsafe extern "C" fn(arg1: SEXP, arg2: c_int) -> SEXP>, 
    arg6: SEXP
) -> SEXP