ceph/src/boost/libs/numeric/ublas/doc/samples/symmetric_adaptor.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     matrix<double> m (3, 3);
  19     symmetric_adaptor<matrix<double>, lower> sal (m);
  20     for (unsigned i = 0; i < sal.size1 (); ++ i)
  21         for (unsigned j = 0; j <= i; ++ j)
  22             sal (i, j) = 3 * i + j;
  23     std::cout << sal << std::endl;
  24     symmetric_adaptor<matrix<double>, upper> sau (m);
  25     for (unsigned i = 0; i < sau.size1 (); ++ i)
  26         for (unsigned j = i; j < sau.size2 (); ++ j)
  27             sau (i, j) = 3 * i + j;
  28     std::cout << sau << std::endl;
  29 }
  30