pub unsafe fn bsearch_arg(
arg_key: *const c_void,
arg_base: *const c_void,
arg_nmemb: usize,
arg_size: usize,
arg_compar: Option<unsafe extern "C" fn(arg1: *const c_void, arg2: *const c_void, arg3: *mut c_void) -> c_int>,
arg_arg: *mut c_void,
) -> *mut c_void