Here are the data structures with brief descriptions:

C_iqbal_estimate_state	Cache for _osmo_iqbal_estimate when doing lots of calls
C_iqbal_state	Internal state structure for the IQ balance optimization algorithm
Ccfile	Structure representing a currently mapped .cfile
Cosmo_cxvec	Complex vector
Cosmo_iqbal_opts	Processing options for the IQ balance optimization algorithm