Here are the data structures with brief descriptions:

C_mm_block	Tuple of pointer to allocated memory block and it's size
Ccode	Gray codes
Cdjb_t	DJB's optimized linear maps mod 2
Cheap	A Heap
Cmzd_t	Dense matrices over GF(2)
Cmzd_t_cache	Cache of mzd_t containers
Cmzp_t	Permutations
Cple_table_t	PLE Elimination Tables