ccs_io, a FORTRAN77 code which reads and writes Compressed Column Storage (CCS) sparse matrix files.
An MxN sparse matrix of NCC nonzero entries in compressed column format is described by three items:
The nonzero entries of column J are stored in locations CCC(J) through CCC(J+1)-1 of ICC and ACC.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
ccs_io is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
ccs, a data directory which contains examples of the Compressed Column Storage (CCS) sparse matrix file format;
ccs_to_st, a FORTRAN77 library which converts a sparse matrix from Compressed Column Storage (CCS) to sparse triple (ST) format.
hb_io, a FORTRAN77 library which reads and writes sparse linear systems stored in the Harwell Boeing (HB) format for sparse matrices.
mm_io, a FORTRAN77 library which reads and writes sparse linear systems stored in the Matrix Market (MM) format.
ST_IO, a FORTRAN77 library which reads and writes sparse linear systems stored in the Sparse Triplet (ST) format.
st_to_ccs, a FORTRAN77 library which converts sparse matrix data from Sparse Triplet (ST) format to Compressed Column Storage (CCS) format.