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<html>
<head>
<title>
ST_TO_CC - Sparse Triplet to Compressed Column Conversion
</title>
</head>
<body bgcolor="#EEEEEE" link="#CC0000" alink="#FF3300" vlink="#000055">
<h1 align = "center">
ST_TO_CC <br> Sparse Triplet to Compressed Column Conversion
</h1>
<hr>
<p>
<b>ST_TO_CC</b>
is a C++ library which
converts information describing a sparse matrix from sparse triplet (ST)
format to compressed column storage (CC).
</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>ST_TO_CC</b> is available in
<a href = "../../c_src/st_to_cc/st_to_cc.html">a C version</a> and
<a href = "../../cpp_src/st_to_cc/st_to_cc.html">a C++ version</a> and
<a href = "../../f77_src/st_to_cc/st_to_cc.html">a FORTRAN77 version</a> and
<a href = "../../f_src/st_to_cc/st_to_cc.html">a FORTRAN90 version</a> and
<a href = "../../m_src/st_to_cc/st_to_cc.html">a MATLAB version</a>.
</p>
<h3 align = "center">
Related Data and Programs:
</h3>
<p>
<a href = "../../data/cc/cc.html">
CC</a>,
a data directory which
contains examples of the Compressed Column (CC)
sparse matrix file format;
</p>
<p>
<a href = "../../cpp_src/cc_io/cc_io.html">
CC_IO</a>,
a C++ library which
reads and writes sparse linear systems
stored in the Compressed Column (CC) format.
</p>
<p>
<a href = "../../cpp_src/cc_to_st/cc_to_st.html">
CC_TO_ST</a>,
a C++ library which
converts a sparse matrix from compressed column (CC)
to sparse triple (ST) format.
</p>
<p>
<a href = "../../datasets/hbsmc/hbsmc.html">
HBSMC</a>,
a dataset directory which
contains the Harwell Boeing Sparse Matrix Collection;
</p>
<p>
<a href = "../../cpp_src/linplus/linplus.html">
LINPLUS</a>,
a C++ library which
carries out operations such as matrix-vector products,
matrix factorization, linear solvers including Gauss-elimination,
Jacobi iteration, Gauss-Seidel iteration, Conjugate Gradient (CG),
for matrices in a variety of formats, including banded, border-banded,
circulant, lower triangular, pentadiagonal, sparse, symmetric,
toeplitz, tridiagonal, upper triangular and vandermonde formats.
</p>
<p>
<a href = "../../data/st/st.html">
ST</a>,
a data directory which
contains examples of the Sparse Triplet (ST) format,
a sparse matrix file format, storing just (I,J,A(I,J)),
and using zero-based indexing.
</p>
<p>
<a href = "../../cpp_src/st_io/st_io.html">
ST_IO</a>,
a C++ library which
reads and writes sparse linear systems stored in the ST "sparse triplet"
Sparse Matrix format.
</p>
<p>
<a href = "../../cpp_src/superlu/superlu.html">
SUPERLU</a>,
C++ programs which
illustrate how to call the SUPERLU library,
(which is written in C),
which applies a fast direct solution method to solve
sparse linear systems,
by James Demmel, John Gilbert, and Xiaoye Li.
</p>
<p>
<a href = "../../cpp_src/umfpack/umfpack.html">
UMFPACK</a>,
C++ programs which
illustrate how to solve a sparse linear system by calling
the C library UMFPACK, by Timothy Davis.
</p>
<p>
<a href = "../../cpp_src/wathen/wathen.html">
WATHEN</a>,
a C++ library which
compares storage schemes (full, banded, sparse triplet) and
solution strategies (Linpack full, Linpack banded,
conjugate gradient (CG)) for linear systems involving the Wathen matrix,
which can arise when solving a problem using the
finite element method (FEM).
</p>
<h3 align = "center">
Source Code:
</h3>
<p>
<ul>
<li>
<a href = "st_to_cc.cpp">st_to_cc.cpp</a>, the source code.
</li>
<li>
<a href = "st_to_cc.hpp">st_to_cc.hpp</a>, the include file.
</li>
<li>
<a href = "st_to_cc.sh">st_to_cc.sh</a>,
BASH commands to compile the source code.
</li>
</ul>
</p>
<h3 align = "center">
Examples and Tests:
</h3>
<p>
<ul>
<li>
<a href = "st_to_cc_prb.cpp">st_to_cc_prb.cpp</a>,
a sample calling program.
</li>
<li>
<a href = "st_to_cc_prb.sh">st_to_cc_prb.sh</a>,
BASH commands to compile and run the sample program.
</li>
<li>
<a href = "st_to_cc_prb_output.txt">st_to_cc_prb_output.txt</a>,
the output file.
</li>
<li>
<a href = "west_st.txt">west_st.txt</a>,
the West matrix, in ST form.
</li>
<li>
<a href = "west_acc.txt">west_acc.txt</a>,
the values of the West matrix, in CC form.
</li>
<li>
<a href = "west_ccc.txt">west_ccc.txt</a>,
the compressed columns of the West matrix, in CC form.
</li>
<li>
<a href = "west_icc.txt">west_icc.txt</a>,
the row indices of the West matrix, in CC form.
</li>
</ul>
</p>
<h3 align = "center">
List of Routines:
</h3>
<p>
<ul>
<li>
<b>CC_MV</b> multiplies a CC matrix by a vector
</li>
<li>
<b>CC_PRINT</b> prints a sparse matrix in CC format.
</li>
<li>
<b>CC_PRINT_SOME</b> prints some of a sparse matrix in CC format.
</li>
<li>
<b>GET_UNIT</b> returns a free FORTRAN unit number.
</li>
<li>
<b>I4VEC_COPY</b> copies an I4VEC.
</li>
<li>
<b>I4VEC_PRINT</b> prints an I4VEC.
</li>
<li>
<b>I4VEC_WRITE</b> writes an I4VEC file.
</li>
<li>
<b>I4VEC2_COMPARE</b> compares entries of an I4VEC2.
</li>
<li>
<b>I4VEC2_SORT_A</b> ascending sorts a vector of pairs of integers.
</li>
<li>
<b>I4VEC2_SORTED_UNIQUE_COUNT</b> counts unique elements in a sorted I4VEC2.
</li>
<li>
<b>I4VEC2_SORTED_UNIQUELY</b> copies unique elements from a sorted I4VEC2.
</li>
<li>
<b>R8_UNIFORM_01</b> returns a unit pseudorandom R8.
</li>
<li>
<b>R8VEC_DIFF_NORM</b> returns the L2 norm of the difference of R8VEC's.
</li>
<li>
<b>R8VEC_PRINT</b> prints an R8VEC.
</li>
<li>
<b>R8VEC_UNIFORM_01</b> returns a unit pseudorandom R8VEC.
</li>
<li>
<b>R8VEC_WRITE</b> writes an R8VEC file.
</li>
<li>
<b>SORT_HEAP_EXTERNAL</b> externally sorts a list of items into ascending order.
</li>
<li>
<b>ST_DATA_READ</b> reads the data of an ST file.
</li>
<li>
<b>ST_HEADER_READ</b> reads the header of an ST file.
</li>
<li>
<b>ST_MV</b> multiplies an R8SP matrix by an R8VEC.
</li>
<li>
<b>ST_PRINT</b> prints a sparse matrix in ST format.
</li>
<li>
<b>ST_PRINT_SOME</b> prints some of a sparse matrix in ST format.
</li>
<li>
<b>ST_TO_CC_INDEX</b> creates CC indices from ST data.
</li>
<li>
<b>ST_TO_CC_SIZE</b> sizes CC indexes based on ST data.
</li>
<li>
<b>ST_TO_CC_VALUES</b> creates CC values from ST data.
</li>
<li>
<b>TIMESTAMP</b> prints the current YMDHMS date as a time stamp.
</li>
<li>
<b>WATHEN_ST:</b> Wathen matrix stored in sparse triplet (ST) format.
</li>
<li>
<b>WATHEN_ST_SIZE:</b> Size of Wathen matrix stored in sparse triplet format.
</li>
</ul>
</p>
<p>
You can go up one level to <a href = "../cpp_src.html">
the C++ source codes</a>.
</p>
<hr>
<i>
Last revised on 15 July 2014.
</i>
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