CC_IO
Read and Write Compressed Column (CC) Sparse Matrix Files


CC_IO is a FORTRAN90 library which reads and writes compressed column (CC) 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.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages:

CC_IO is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.

Related Data and Programs:

CC, a data directory which contains examples of the Compressed Column (CC) sparse matrix file format;

CC_TO_ST, a FORTRAN90 library which converts a sparse matrix from compressed column (CC) to sparse triple (ST) format.

HB_IO, a FORTRAN90 library which reads and writes sparse linear systems stored in the Harwell Boeing (HB) format for sparse matrices.

MM_IO, a FORTRAN90 library which reads and writes sparse linear systems stored in the Matrix Market (MM) format.

ST_IO, a FORTRAN90 library which reads and writes sparse linear systems stored in the Sparse Triplet (ST) format.

ST_TO_CC, a FORTRAN90 library which converts sparse matrix data from Sparse Triplet (ST) format to Compressed Column (CC) format.

Source Code:

Examples and Tests:

Test #1 and #2 write and read back the information for the "simple" 5x5 matrix with 12 nonzero entries. There are files associated with this.

List of Routines:

You can go up one level to the FORTRAN90 source codes.


Last revised on 18 July 2014.