Function sqlite3_sys::sqlite3_create_function_v2

pub unsafe extern fn sqlite3_create_function_v2(p: *mut sqlite3,
                                                p: *const c_char,
                                                n: c_int,
                                                n: c_int,
                                                p: *mut c_void,
                                                f: Option<sqlite3_create_function_callback1>,
                                                f: Option<sqlite3_create_function_callback1>,
                                                f: Option<sqlite3_create_function_callback2>,
                                                f: Option<sqlite3_callback>)
                                                -> c_int