ST_IO
Read and Write Sparse Triplet (ST) Matrix Files.

ST_IO is a C++ library which reads and writes files in the Sparse Triplet (ST) format used for storing sparse matrices.

Licensing:

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

Languages:

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

Related Data and Programs:

CC_IO, a C++ library which reads and writes sparse linear systems stored in the Compressed Column (CC) format.

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

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

ST, the format which is used for the input to this program.

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

Source Code:

• st_io.cpp, the source code.
• st_io.hpp, the include file.
• st_io.sh, commands to compile the source code.

Examples and Tests:

• st_io_prb.cpp, a sample calling program.
• st_io_prb.sh, commands to compile and run the sample program.
• st_io_prb_output.txt, the output file.
• a5by5.st, an ST file storing a 5 by 5 matrix.
• kershaw.st, an ST file storing a 4 by 4 matrix.

List of Routines:

• SORT_HEAP_EXTERNAL externally sorts a list of items into ascending order.
• ST_DATA_PRINT prints the data in an ST file.
• ST_DATA_PRINT_SOME prints some of the data in an ST file.
• ST_DATA_READ reads the data of an ST file.
• ST_DATA_WRITE writes the data of an ST file.
• ST_HEADER_PRINT prints the header of an ST file.
• ST_HEADER_READ reads the header of an ST file.
• ST_HEADER_WRITE writes the header of an ST file.
• ST_REBASE changes the base of an index array.
• ST_SORT_A sorts the entries of an ST matrix by column.
• ST_TRANSPOSE transposes an ST matrix.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.