22 #ifndef INCLUDED_DAB_INSERT_NULL_SYMBOL_IMPL_H
23 #define INCLUDED_DAB_INSERT_NULL_SYMBOL_IMPL_H
40 void forecast (
int noutput_items, gr_vector_int &ninput_items_required);
43 gr_vector_int &ninput_items,
44 gr_vector_const_void_star &input_items,
45 gr_vector_void_star &output_items);