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<html>
<head>
<title>
DLAP_IO - Read and Write DLAP Sparse Matrix Files
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
DLAP_IO<br>
DLAP Sparse Matrix Files<br>
Read and Write Utilities
</h1>
<hr>
<p>
<b>DLAP_IO</b>
is a MATLAB library which
reads and writes files in the DLAP sparse matrix format, used by
DLAP, the Sparse Linear Algebra Package.
</p>
<h3 align = "center">
Licensing:
</h3>
<p>
The computer code and data files 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>DLAP_IO</b> is available in
<a href = "../../f77_src/dlap_io/dlap_io.html">a FORTRAN77 version</a> and
<a href = "../../f_src/dlap_io/dlap_io.html">a FORTRAN90 version</a> and
<a href = "../../m_src/dlap_io/dlap_io.html">a MATLAB version.</a>
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../m_src/cc_io/cc_io.html">
CC_IO</a>,
a MATLAB library which
reads and writes sparse linear systems
stored in the Compressed Column (CC) format.
</p>
<p>
<a href = "../../m_src/hb_io/hb_io.html">
HB_IO</a>,
a MATLAB library which
reads and writes sparse linear
systems stored in the Harwell-Boeing Sparse Matrix format.
</p>
<p>
<a href = "../../m_src/mm_io/mm_io.html">
MM_IO</a>,
a MATLAB library which
reads and writes sparse linear
systems stored in the Matrix Market format.
</p>
<p>
<a href = "../../m_src/st_io/st_io.html">
ST_IO</a>,
a MATLAB library which
reads and writes sparse linear systems stored in the Sparse Triplet (ST) format.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Iain Duff, Roger Grimes, John Lewis,<br>
User's Guide for the Harwell-Boeing Sparse Matrix Collection,<br>
October 1992.
</li>
</ol>
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "dlap_file_print.m">dlap_file_print.m</a>
prints a DLAP linear system that was stored in a file.
</li>
<li>
<a href = "dlap_file_read.m">dlap_file_read.m</a>
reads in a DLAP matrix contained in a file.
</li>
<li>
<a href = "dlap_file_write.m">dlap_file_write.m</a>
writes out a DLAP Triad Format Linear System.
</li>
<li>
<a href = "dlap_header_print.m">dlap_header_print.m</a>
prints the header line of a DLAP file.
</li>
<li>
<a href = "dlap_header_read.m">dlap_header_read.m</a>
reads the header line from a DLAP file.
</li>
<li>
<a href = "dlap_header_write.m">dlap_header_write.m</a>
writes the header line to a DLAP file.
</li>
<li>
<a href = "dlap_rhs_print.m">dlap_rhs_print.m</a>
prints the right hand side vector from a DLAP file.
</li>
<li>
<a href = "dlap_rhs_read.m">dlap_rhs_read.m</a>
reads the right hand side vector from a DLAP file.
</li>
<li>
<a href = "dlap_rhs_write.m">dlap_rhs_write.m</a>
writes a right hand side vector to a DLAP file.
</li>
<li>
<a href = "dlap_soln_print.m">dlap_soln_print.m</a>
prints the solution vector from a DLAP file.
</li>
<li>
<a href = "dlap_soln_read.m">dlap_soln_read.m</a>
reads the solution vector from a DLAP file.
</li>
<li>
<a href = "dlap_soln_write.m">dlap_soln_write.m</a>
writes a solution vector to a DLAP file.
</li>
<li>
<a href = "r8sp_print.m">r8sp_print.m</a>
prints an R8SP matrix.
</li>
<li>
<a href = "r8sp_print_some.m">r8sp_print_some.m</a>
prints some of an R8SP matrix.
</li>
<li>
<a href = "r8vec_print.m">r8vec_print.m</a>
prints an R8VEC.
</li>
<li>
<a href = "r8vec_print_some.m">r8vec_print_some.m</a>
prints "some" of an R8VEC.
</li>
<li>
<a href = "timestamp.m">timestamp.m</a>
prints the current YMDHMS date as a time stamp.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "dlap_io_test.m">dlapb_io_test.m</a>,
a sample calling program.
</li>
<li>
<a href = "dlap_io_test01.m">dlapb_io_test01.m</a>,
writes the file a5by5.dlap.
</li>
<li>
<a href = "dlap_io_test02.m">dlapb_io_test02.m</a>,
reads the file a5by5.dlap.
</li>
<li>
<a href = "dlap_io_test03.m">dlapb_io_test03.m</a>,
writes the file a5by5_sym.dlap.
</li>
<li>
<a href = "dlap_io_test04.m">dlapb_io_test04.m</a>,
reads the file a5by5_sym.dlap.
</li>
<li>
<a href = ".dlap_io_test_output.txt">dlap_io_test_output.txt</a>,
the output file.
</li>
<li>
<a href = "a5by5.dlap">a5by5.dlap</a>,
a 5 by 5 matrix, right hand side, and solution, created by one routine
in the calling program and read by another.
</li>
<li>
<a href = "a5by5_sym.dlap">a5by5_sym.dlap</a>,
a 5 by 5 symmetric matrix, right hand side, and solution, created by one routine
in the calling program and read by another.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../m_src.html">
the MATLAB source codes</a>.
</p>
<hr>
<i>
Last revised on 31 January 2014.
</i>
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