MM_IO
Matrix Market
Read and Write Utilities
MM_IO
is a FORTRAN90 library which
reads and writes files in the Matrix Market (MM) format.
Licensing:
The computer code and data files described and made available on this web page
are distributed under
the GNU LGPL license.
Languages:
MM_IO is available in
a C version and
a FORTRAN90 version and
a MATLAB version.
Related Data and Programs:
CC_IO,
a FORTRAN90 library which
reads and writes sparse linear systems
stored in the Compressed Column (CC) format.
DLAP_IO,
a FORTRAN90 library which
reads and writes files
describing sparse matrices used by DLAP.
HB_IO,
a FORTRAN90 library which
reads and writes sparse matrices stored in the Harwell-Boeing format.
HB_TO_ST,
a FORTRAN90 program which
converts the sparse matrix information stored in a Harwell-Boeing
file into a sparse triplet file.
MM,
a data directory which
contains a description and
examples of the Matrix Market format for storing matrices.
ST_IO,
a FORTRAN90 library which
reads and writes sparse linear systems
stored in the Sparse Triplet (ST) format.
TEST_MAT,
a FORTRAN90 library which
defines various test matrices.
Reference:
-
Ronald Boisvert, Roldan Pozo, Karin Remington,
The Matrix Market Exchange Formats: Initial Design,
National Institute of Standards and Technology,
NISTIR 5935, December 1996.
-
http://math.nist.gov/MatrixMarket/,
the Matrix Market web site.
Source Code:
Examples and Tests:
List of Routines:
-
CH_CAP capitalizes a single character.
-
GET_UNIT returns a free FORTRAN unit number.
-
MM_COMMENT_PRINT prints a comment from a Matrix Market file.
-
MM_COMMENT_READ reads a comment from a Matrix Market file.
-
MM_COMMENT_WRITE writes a comment to a Matrix Market file.
-
MM_FILE_READ reads data from a Matrix Market file.
-
MM_FILE_WRITE writes data to a Matrix Market file.
-
MM_HEADER_CHECK checks the header strings for a Matrix Market file.
-
MM_HEADER_PRINT prints header information from a Matrix Market file.
-
MM_HEADER_READ reads the header line from a Matrix Market file.
-
MM_HEADER_WRITE prints header information to a Matrix Market file.
-
MM_NNZ_SET sets the value of NNZ for the ARRAY representation.
-
MM_SIZE_PRINT prints size information from a Matrix Market file.
-
MM_SIZE_READ_FILE reads size information from a Matrix Market file.
-
MM_SIZE_READ_STRING reads size information from a string.
-
MM_SIZE_WRITE writes size information to a Matrix Market file.
-
MM_VALUES_PRINT prints the matrix values of a Matrix Market file.
-
MM_VALUES_PRINT_SOME prints some matrix values of a Matrix Market file.
-
MM_VALUES_READ reads matrix values from a Matrix Market file.
-
MM_VALUES_WRITE writes matrix values to a Matrix Market file.
-
S_EQI is a case insensitive comparison of two strings for equality.
-
S_NEQI compares two strings for non-equality, ignoring case.
-
S_TO_I4 reads an I4 from a string.
-
S_TO_I4VEC reads an I4VEC from a string.
-
S_W_NEXT "reads" words from a string, one at a time.
-
TIMESTAMP prints the current YMDHMS date as a time stamp.
You can go up one level to
the FORTRAN90 source codes.
Last revised on 27 November 2006.