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<html>
<head>
<title>
ST_IO - Read and Write Sparse Triplet (ST) Matrix Files.
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
ST_IO <br> Read and Write Sparse Triplet (ST) Matrix Files.
</h1>
<hr>
<p>
<b>ST_IO</b>
is a FORTRAN90 library which
reads and writes files in the Sparse Triplet (ST) format
used for storing sparse matrices.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files described and made available on this web page
are distributed under
<a href = "../../txt/gnu_lgpl.txt">the GNU LGPL license.</a>
</p>
<h3 align = "center">
Languages:
</h3>
<p>
<b>ST_IO</b> is available in
<a href = "../../f_src/st_io/st_io.html">a FORTRAN90 version</a> and
<a href = "../../m_src/st_io/st_io.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../f_src/dsp_to_st/dsp_to_st.html">
DSP_TO_ST</a>,
a FORTRAN90 program which
converts a sparse matrix file from DSP format to Sparse Triplet (ST) format.
</p>
<p>
<a href = "../../f_src/hb_to_st/hb_to_st.html">
HB_TO_ST</a>,
a FORTRAN90 program which
converts a sparse matrix from Harwell Boeing (HB) to Sparse Triplet (ST) format.
</p>
<p>
<a href = "../../data/st/st.html">
ST</a>,
the format which
is used for the input to this program.
</p>
<p>
<a href = "../../f_src/st_to_dsp/st_to_dsp.html">
ST_TO_DSP</a>,
a FORTRAN90 program which
converts a sparse matrix from Sparse Triplet (ST) to DSP format.
</p>
<p>
<a href = "../../f_src/st_to_hb/st_to_hb.html">
ST_TO_HB</a>,
a FORTRAN90 program which
converts a sparse matrix file from Sparse Triplet (ST) format
to Harwell Boeing (HB) format;
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "st_io.f90">st_io.f90</a>, the source code.
</li>
<li>
<a href = "st_io.sh">st_io.sh</a>,
commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "st_io_prb.f90">st_io_prb.f90</a>,
a sample calling program.
</li>
<li>
<a href = "st_io_prb.sh">st_io_prb.sh</a>,
commands to compile and run the sample program.
</li>
<li>
<a href = "st_io_prb_output.txt">st_io_prb_output.txt</a>,
the output file.
</li>
<li>
<a href = "a5by5.st">a5by5.st</a>,
an ST file storing a 5 by 5 matrix.
</li>
<li>
<a href = "kershaw.st">kershaw.st</a>,
an ST file storing a 4 by 4 matrix.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>SORT_HEAP_EXTERNAL</b> externally sorts a list of items into ascending order.
</li>
<li>
<b>ST_DATA_PRINT</b> prints the data in an ST file.
</li>
<li>
<b>ST_DATA_PRINT_SOME</b> prints some of the data in an ST file.
</li>
<li>
<b>ST_DATA_READ</b> reads the data of an ST file.
</li>
<li>
<b>ST_DATA_WRITE</b> writes the data of an ST file.
</li>
<li>
<b>ST_HEADER_PRINT</b> prints the header of an ST file.
</li>
<li>
<b>ST_HEADER_READ</b> reads the header of an ST file.
</li>
<li>
<b>ST_HEADER_WRITE</b> writes the header of an ST file.
</li>
<li>
<b>ST_REBASE</b> changes the base of an index array.
</li>
<li>
<b>ST_SORT_A</b> sorts the entries of an ST matrix by column.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../f_src.html">
the FORTRAN90 source codes</a>.
</p>
<hr>
<i>
Last revised on 01 November 2008.
</i>
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