Function sqlite3_sys::sqlite3_create_function16

pub unsafe extern "C" fn sqlite3_create_function16(
    p: *mut sqlite3, 
    p: *const c_void, 
    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>
) -> c_int