ceph/src/boost/libs/numeric/ublas/doc/samples/symmetric_matrix.cpp

   1 //
   2 //  Copyright (c) 2000-2002
   3 //  Joerg Walter, Mathias Koch
   4 //
   5 //  Distributed under the Boost Software License, Version 1.0. (See
   6 //  accompanying file LICENSE_1_0.txt or copy at
   7 //  http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 //  The authors gratefully acknowledge the support of
  10 //  GeNeSys mbH & Co. KG in producing this work.
  11 //
  12
  13 #include <boost/numeric/ublas/symmetric.hpp>
  14 #include <boost/numeric/ublas/io.hpp>
  15
  16 int main () {
  17     using namespace boost::numeric::ublas;
  18     symmetric_matrix<double, lower> ml (3, 3);
  19     for (unsigned i = 0; i < ml.size1 (); ++ i)
  20         for (unsigned j = 0; j <= i; ++ j)
  21             ml (i, j) = 3 * i + j;
  22     std::cout << ml << std::endl;
  23     symmetric_matrix<double, upper> mu (3, 3);
  24     for (unsigned i = 0; i < mu.size1 (); ++ i)
  25         for (unsigned j = i; j < mu.size2 (); ++ j)
  26             mu (i, j) = 3 * i + j;
  27     std::cout << mu << std::endl;
  28 }
  29