Function pgx_pg_sys::qsort_r

pub unsafe fn qsort_r(
    arg___base: *mut c_void, 
    arg___nel: usize, 
    arg___width: usize, 
    arg_arg1: *mut c_void, 
    arg___compar: Option<unsafe extern "C" fn(arg1: *mut c_void, arg2: *const c_void, arg3: *const c_void) -> c_int>
)