/* Select a suitable lchan from a given cell. */#pragma oncestructgsm_lchan*lchan_select_by_type(structgsm_bts*bts,enumgsm_chan_ttype);structgsm_lchan*lchan_select_by_chan_mode(structgsm_bts*bts,enumgsm48_chan_modechan_mode,enumchannel_ratechan_rate);