Here is a list of all documented files with brief descriptions:

include
osmocom
dsp
cfile.h	Osmocom .cfile helpers header
cxvec.h	Osmocom Complex vectors header
cxvec_math.h	Osmocom Complex vectors math header
iqbal.h	Osmocom IQ balance utils header
src
cfile.c	Osmocom .cfile helpers implementation
cxvec.c	Osmocom Complex vectors implementation
cxvec_math.c	Osmocom Complex vectors math implementation
iqbal.c	IQ balance utils implementation