ppc_sparse_matrix, a C code which packs a sparse MxN matrix into compressed column storage (CCS), or unpacks a compressed column storage matrix to MxN format, from Rouben Rostamian's "Programming Projects in C";
The computer code and data files described and made available on this web page are distributed under the MIT license
ppc_sparse_matrix is available in a C version.
ppc_xmalloc, a library which manages the allocation of memory, from Rouben Rostamian's "Programming Projects in C";