107 lines
3.0 KiB
C++
107 lines
3.0 KiB
C++
// Copyright (c) 2009-2011 Gunter Winkler, David Bellot
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// ublas headers
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#include <boost/numeric/ublas/experimental/sparse_view.hpp>
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#include <boost/numeric/ublas/matrix.hpp>
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#include <boost/numeric/ublas/matrix_sparse.hpp>
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#include <boost/numeric/ublas/io.hpp>
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#include <boost/numeric/ublas/traits/c_array.hpp>
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// other boost headers
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// headers for testcase
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#define BOOST_TEST_MODULE SparseMatrixErasureTest
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#include <boost/test/included/unit_test.hpp>
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// standard and system headers
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#include <iostream>
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#include <string>
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namespace ublas = boost::numeric::ublas;
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/*
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sparse input matrix:
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1 2 0 0
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0 3 9 0
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0 1 4 0
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*/
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static const std::string inputMatrix = "[3,4]((1,2,0,0),(0,3,9,0),(0,1,4,0))\n";
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const unsigned int NNZ = 6;
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const unsigned int IB = 1;
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const double VA[] = { 1.0, 2.0, 3.0, 9.0, 1.0, 4.0 };
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const unsigned int IA[] = { 1, 3, 5, 7 };
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const unsigned int JA[] = { 1, 2, 2, 3, 2, 3 };
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BOOST_AUTO_TEST_CASE( test_construction_and_basic_operations )
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{
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typedef ublas::matrix<double> DENSE_MATRIX;
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// prepare data
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DENSE_MATRIX A;
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std::istringstream iss(inputMatrix);
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iss >> A;
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std::cout << A << std::endl;
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std::cout << ( ublas::make_compressed_matrix_view<ublas::row_major,IB>(3,4,NNZ,IA,JA,VA) ) << std::endl;
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typedef ublas::compressed_matrix_view<ublas::row_major, IB, unsigned int [4], unsigned int [NNZ], double[NNZ]> COMPMATVIEW;
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COMPMATVIEW viewA(3,4,NNZ,IA,JA,VA);
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std::cout << viewA << std::endl;
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}
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BOOST_AUTO_TEST_CASE( test_construction_from_pointers )
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{
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std::cout << ( ublas::make_compressed_matrix_view<ublas::column_major,IB>(4,3,NNZ
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, ublas::c_array_view<const unsigned int>(4,&(IA[0]))
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, ublas::c_array_view<const unsigned int>(6,&(JA[0]))
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, ublas::c_array_view<const double>(6,&(VA[0]))) ) << std::endl;
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unsigned int * ia = new unsigned int[4]();
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unsigned int * ja = new unsigned int[6]();
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double * va = new double[6]();
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std::copy(&(IA[0]),&(IA[4]),ia);
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std::copy(&(JA[0]),&(JA[6]),ja);
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std::copy(&(VA[0]),&(VA[6]),va);
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typedef ublas::compressed_matrix_view<ublas::column_major
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, IB
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, ublas::c_array_view<unsigned int>
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, ublas::c_array_view<unsigned int>
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, ublas::c_array_view<double> > COMPMATVIEW;
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COMPMATVIEW viewA(4,3,NNZ
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, ublas::c_array_view<unsigned int>(4,ia)
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, ublas::c_array_view<unsigned int>(6,ja)
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, ublas::c_array_view<double>(6,va));
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std::cout << viewA << std::endl;
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delete[] va;
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delete[] ja;
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delete[] ia;
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}
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