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linpack.html
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<html>
<head>
<title>
LINPACK - Linear Algebra Library
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
LINPACK <br> Linear Algebra Library
</h1>
<hr>
<p>
<b>LINPACK</b>
is a MATLAB library which
solves systems of linear equations for a variety of matrix types and storage modes,
for real or complex arithmetic, and for single or double precision,
by Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart.
</p>
<p>
<b>LINPACK</b> has officially been superseded by the LAPACK library. The LAPACK
library uses more modern algorithms and code structure. However,
the LAPACK library can be extraordinarily complex; what is done
in a single LINPACK routine may correspond to 10 or 20 utility
routines in LAPACK. This is fine if you treat LAPACK as a black
box. But if you wish to learn how the algorithm works, or
to adapt it, or to convert the code to another language, this
is a real drawback. This is one reason I still keep a copy
of LINPACK around.
</p>
<p>
The LINPACK routines are available in both real and complex arithmetic
versions, and using single precision or double precision. In most
cases, a given routine has a root name, such as <b>GEFA</b>,
and a prefix is used to identify the arithmetic and precision. Thus,
<ul>
<li>
<b>CGEFA</b> is the single precision complex version of GEFA;
</li>
<li>
<b>DGEFA</b> is the double precision real version of GEFA;
</li>
<li>
<b>SGEFA</b> is the single precision real version of GEFA;
</li>
<li>
<b>ZGEFA</b> is the double precision complex version of GEFA;
</li>
</ul>
</p>
<p>
Versions of <b>LINPACK</b> in various arithmetic precisions are available
through <a href = "http://www.netlib.org/">the NETLIB web site</a>.
</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>LINPACK</b> is available in
<a href = "../../c_src/linpack/linpack.html">a C version</a> and
<a href = "../../cpp_src/linpack/linpack.html">a C++ version</a> and
<a href = "../../f77_src/linpack/linpack.html">a FORTRAN77 version</a> and
<a href = "../../f_src/linpack/linpack.html">a FORTRAN90 version</a> and
<a href = "../../m_src/linpack/linpack.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../m_src/linpack_c/linpack_c.html">
LINPACK_C</a>,
a MATLAB library which
solves linear systems using single precision complex arithmetic;
</p>
<p>
<a href = "../../m_src/linpack_d/linpack_d.html">
LINPACK_D</a>,
a MATLAB library which
solves linear systems using double precision real arithmetic;
</p>
<p>
<a href = "../../m_src/linpack_s/linpack_s.html">
LINPACK_S</a>,
a MATLAB library which
solves linear systems using single precision real arithmetic;
</p>
<p>
<a href = "../../m_src/linpack_z/linpack_z.html">
LINPACK_Z</a>,
a MATLAB library which
solves linear systems using double precision complex arithmetic;
</p>
<h3 align = "center">
Author:
</h3>
<p>
Original FORTRAN77 version by Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart.
MATLAB version by John Burkardt.
</p>
<h3 align = "center">
Reference:
</h3>
<p>
<ol>
<li>
Jack Dongarra, Jim Bunch, Cleve Moler, Pete Stewart,<br>
LINPACK User's Guide,<br>
SIAM, 1979,<br>
ISBN13: 978-0-898711-72-1,<br>
LC: QA214.L56.
</li>
</ol>
</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 29 April 2012.
</i>
<!-- John Burkardt -->
</body>
</html>