Function fst_sys::bindings::fstReaderIterBlocks

pub unsafe extern "C" fn fstReaderIterBlocks(
    ctx: *mut c_void, 
    value_change_callback: Option<unsafe extern "C" fn(user_callback_data_pointer: *mut c_void, time: u64, facidx: fstHandle, value: *const c_uchar)>, 
    user_callback_data_pointer: *mut c_void, 
    vcdhandle: *mut FILE
) -> c_int